A conclave is a gathering of the College of Cardinals convened to appoint the pope of the Catholic Church. Catholics consider the pope to be the apostolic successor of Saint Peter and the earthly head of the Catholic Church.
Concerns around political interference led to reforms after the interregnum of 1268–1271 and Pope Gregory X's decree during the Second Council of Lyons in 1274 that the cardinal electors should be locked in seclusion and not permitted to leave until a new pope had been elected. Conclaves are now held in the Sistine Chapel of the Apostolic Palace in Vatican City.John Paul II (22 February 1996). Universi Dominici gregis . Apostolic constitution. Vatican City: Vatican Publishing House.
From the Apostolic Age until 1059, the pope, like other bishops, was chosen by the consensus of the clergy and laity of the diocese.Baumgartner 2003, p. 4. In 1059, the body of electors was more precisely defined, when the College of Cardinals was designated the sole body of electors. Since then, other details of the procedures have developed. In 1970, Pope Paul VI limited the electors to cardinals under 80 years of age in Ingravescentem aetatem. The procedures established by Pope John Paul II in Universi Dominici gregis were slightly amended in 2007 and 2013 by Pope Benedict XVI. "Pope Issues Conclave Motu Proprio" National Catholic Register. 25 February 2013.
A two-thirds supermajority vote is required to elect the new pope.Benedict XVI (11 June 2007). De aliquibus mutationibus in normis de electione Romani Pontificis (in Latin). Motu proprio. Vatican City: Vatican Publishing House. "Pope alters voting for successor" . BBC News. 26 June 2007.
The process was further refined by Gregory XV with his 1621 papal bull Aeterni Patris Filius, which established the requirement of a two-thirds majority of cardinal electors to elect a pope.Signorotto and Visceglia 2002, p. 106 The Third Council of the Lateran had initially set the requirement that two-thirds of the cardinals were needed to elect a pope in 1179.Baumgartner 2003, pp. 32–33 This requirement had varied since then, depending on whether the winning candidate was allowed to vote for himself, in which cases the required majority was two-thirds plus one vote. Aeterni Patris Filius prohibited this practice and established two-thirds as the standard needed for election.Baumgartner 2003, p. 146
Aeterni Patris Filius did not eliminate the possibility of election by acclamation, but did require that a secret ballot take place first before a pope could be elected.Baumgartner 2003, p. 145 Prior to 1621, a cardinal could vote for himself, but it was always with the knowledge and consent of enough of the other voting cardinals, so that he did not make the final decision to make himself pope (accessus). Ballots were either signed or initialed in the corner of the ballot, or sometimes coded and numbered.Vacante A S, 1904
The right of the laity to reject the person elected was abolished by a synod held in the Lateran in 769, but restored to Roman noblemen by Pope Nicholas I during a synod of Rome in 862. The pope was also subjected to oaths of loyalty to the Holy Roman emperor, who had the duty of providing security and public peace in Rome.Baumgartner 2003, p. 14–19. A major change came in 1059, when Pope Nicholas II decreed in In nomine Domini that the cardinals were to elect a candidate to take office after receiving the assent of the clergy and laity. The were to meet first and discuss the candidates before summoning the and for the actual vote. The Second Council of the Lateran in 1139 removed the requirement for obtaining the assent of the lower clergy and the laity, while the Third Council of the Lateran in 1179 gave equal rights to the entire College of Cardinals when electing a new pope.Guruge 2010, p. 49.
Through much of the Middle Ages and Renaissance the Catholic Church had only a small number of cardinals at any one time, as few as seven under either Pope Alexander IV (1254–1261) or Pope John XXI (1276–1277).Miranda, Salvador. "Election of May 30 – November 25, 1277 (Nicholas III)" .Adams, John Paul (7 November 2010). "SEDE VACANTE 1277" The difficulty of travel further reduced the number arriving at conclaves. The small electorate magnified the significance of each vote and made it all but impossible to displace familial or political allegiances. Conclaves lasted months and even years. In his 1274 decree requiring the electors be locked in seclusion, Gregory X also limited each cardinal elector to two servants and rationed their food progressively when a conclave reached its fourth and ninth days.
The cardinals disliked these rules; Pope Adrian V temporarily suspended them in 1276 and John XXI's Licet felicis recordationis revoked them later that same year. Lengthy elections resumed and continued to be the norm until 1294, when Pope Celestine V reinstated the 1274 rules.Baumgartner 2003, p. 44–46. Long interregna followed: in 1314–1316 during the Avignon Papacy, where the original conclaves were dispersed by besieging mercenaries and not reconvened for almost two years;Levillain 2002, p. 848. and in 1415–1417, as a result of the Western Schism.
Until 1899, it was a regular practice to generally include a few lay members in the Sacred College. These were often prominent nobility, or monks who were not priests, and in all cases, celibacy was required. With the death of Teodolfo Mertel in 1899, this practice was ended."https://cardinals.fiu.edu/cardinals.htm In 1917, the Code of Canon Law promulgated that year, explicitly stated that all cardinals must be priests. Since 1962, all cardinals have been bishops, with the exception of a few priests who have been made cardinals since about 1970. These few have all been at least 80 years old and not allowed to vote in a papal election, since Paul VI in that same year of 1970 imposed the rule that all voting cardinals be under 80 years of age. If a priest is asked by the pope to become a cardinal he may request not to be ordained a bishop, but this is the exception rather than the rule.
In 1587, Pope Sixtus V limited the number of cardinals to 70, following the precedent of Moses who was assisted by 70 elders in governing the Children of Israel: 6 cardinal bishops, 50 cardinal priests, and 14 cardinal deacons. Beginning with the attempts of Pope John XXIII (1958–1963) to broaden the representation of nations in the College of Cardinals, that number has increased. In 1970 Paul VI ruled that cardinals who reach the age of 80 before the start of a conclave are ineligible to participate.
In 1975, he limited the number of cardinal electors to 120. Though this remains the theoretical limit, all of his successors have exceeded it for short periods of time. John Paul II (in office 1978–2005) made a slight change to the age limit rules, barring cardinals 80 or older from serving as electors if they reach that age before the papacy becomes vacant. This change eliminated the possibility of scheduling a conclave to include or exclude a cardinal who might be close to the limit. The 2025 papal conclave was the first time that more than 120 cardinal-electors participated, at 133.
Nicholas II, in the synod of 1059, formally codified existing practice by decreeing that preference was to be given to the clergy of Rome, but leaving the cardinal bishops free to select a cleric from elsewhere if they so decided.Baumgartner 2003, p. 21-23. The Council of 1179 rescinded these restrictions on eligibility. On 15 February 1559, Paul IV issued the papal bull Cum ex apostolatus officio, a codification of the ancient Catholic law that only Catholics can be elected popes, to the exclusion of non-Catholics, including former Catholics who have become public and manifest heretics.
Pope Urban VI in 1378 became the last pope elected from outside the College of Cardinals.
The last person elected as pope who was not already an ordained priest or deacon was the cardinal-deacon Giovanni di Lorenzo de' Medici, elected as Pope Leo X in 1513. His successor, Pope Adrian VI, was the last to be elected, in 1522, in absentia.Guruge 2010, p. 36-37. Archbishop Giovanni Montini of Milan received several votes in the 1958 conclave though not yet a cardinal.Baumgartner 2003, p. 215. As the Catholic Church holds that women cannot be validly ordained, women are not eligible for the papacy. Though the pope is the bishop of Rome, he need not be of Italian background. , the four most recent conclaves have elected a Pole in 1978, a German in 2005, an Argentinian in 2013, and an American in 2025.During the first millennium, popes were elected unanimously, at least in theory. After a decree by the Synod of Rome in 1059, some factions contended that a simple majority sufficed to elect. In 1179, the Third Council of the Lateran settled the question by calling for unanimity, but permitting the Pope to be elected by two-thirds majority, "if by chance, through some enemy sowing tares, there cannot be full agreement." As cardinals were not allowed to vote for themselves after 1621, the ballots were designed to ensure secrecy while at the same time preventing self-voting.
In 1945, Pope Pius XII removed the requirement for signed ballots
as well as the prohibition on a cardinal voting for himself, increasing the requisite majority to two-thirds plus one at all times.Pius XII (8 December 1945). Vacantis Apostolicae Sedis (in Latin). Apostolic constitution. Vatican City. His successor John XXIII immediately reinstated the two-thirds majority if the number of cardinal electors voting is divisible by three, with an additional vote required if the number is not divisible by three. Paul VI reinstated Pius XII's procedure thirteen years later, but John Paul II overturned it again.In 1996, John Paul II's constitution allowed election by absolute majority if deadlock prevailed after thirty-three or thirty-four ballots, thirty-four ballots if a ballot took place on the first afternoon of the conclave. In 2007, Benedict XVI rescinded John Paul II's change, which had effectively abolished the two-thirds majority requirement, as any majority suffices to block the election until a simple majority is enough to elect the next pope, reaffirming the requirement of a two-thirds majority.
Electors formerly made choices by accessus, acclamation ( per inspirationem), adoration, compromise ( per compromissum), or scrutiny ( per scrutinium).
The last election by compromise was that of Pope John XXII in 1316, and the last election by acclamation was that of Pope Innocent XI in the 1676 conclave.Toman, J. T. (5 January 2004). The Papal Conclave: How do Cardinals Divine the Will of God? . Universi Dominici gregis formally abolished the long-unused methods of acclamation and compromise in 1996, making scrutiny the only approved method for the election of a new pope.
After the demise of the Western Roman Empire, influence passed to the kings of Italy. In 533, Pope John II formally recognised the right of the Ostrogothic monarchs to ratify elections. By 537, the Ostrogothic monarchy had been overthrown, and power passed to the Byzantine emperors. A procedure was adopted whereby officials were required to notify the exarch of Ravenna upon the death of a pope before proceeding with the election.Baumgartner 2003, p. 10. Once the electors arrived at a choice, they were required to send a delegation to Constantinople requesting the emperor's consent, which was necessary before the individual elected could take office.Duffy 2006, p. 73.
Travel to and from Constantinople caused lengthy delays. When Pope Benedict II (684–685) complained about them, Emperor Constantine IV (in office 654–685) acquiesced, ending the requirement for emperors to confirm elections. Thereafter, the emperor was only required to be notified. The last pope to notify a Byzantine emperor was Pope Zachary in 741.Baumgartner 2003, p. 12.
In the 9th century, the Carolingian Empire (and its successor, the Holy Roman Empire) came to exert control over papal elections. Charlemagne, emperor from 800 to 814, and Louis the Pious, emperor from 813 to 840 did not interfere with the Church. Lothair I, emperor from 817 to 855, claimed that an election could only take place in the presence of imperial ambassadors.Kurtz 1889, p. 489. In 898, riots forced Pope John IX to recognise the superintendence of the Holy Roman emperor. At the same time, the Roman nobility continued to exert great influence, especially during the tenth-century period known as saeculum obscurum, Latin for "the dark age".
In 1059, the same papal bull that restricted suffrage to the cardinals recognised the authority of the Holy Roman emperor, at the time Henry IV, but only as a concession made by the pope, declaring that the emperor had no authority to intervene in elections, except where permitted to do so by papal agreements. Pope Gregory VII, in office 1073–1085, was the last pope to submit to the interference of the Holy Roman emperors. The breach between him and the Holy Roman Empire caused by the Investiture Controversy led to the abolition of the emperor's role.Nelson, Lynn H. (1999) "The Owl, The Cat, And The Investiture Controversy: 1000 – 1122" . In 1122, the Holy Roman Empire acceded to the Concordat of Worms, accepting the papal decision. "The Concordat of Worms 1122" . Halsall, Paul (ed.) Internet Medieval Source Book (January 1996).
From about 1600, certain Catholic monarchs claimed a jus exclusivae (right of exclusion), i.e. a veto over papal elections, exercised through a crown-cardinal. By an informal convention, each state claiming the veto could exercise the right, once per conclave. Therefore, a crown-cardinal did not announce his veto until the very last moment, when the candidate in question seemed likely to get elected. No vetoes could be employed after an election. After the Holy Roman Empire dissolved in 1806, its veto power devolved upon the Austrian Empire. The last exercise of the veto occurred in 1903, when Prince Jan Puzyna de Kosielsko informed the College of Cardinals that Austria opposed the election of Mariano Rampolla. Consequently, the college elected Giuseppe Sarto as Pope Pius X, who issued the constitution Commissum nobis six months later, declaring that any cardinal who communicated his government's veto in the future would suffer excommunication latae sententiae.
In 1274, in an attempt to avoid future lengthy elections, Gregory X introduced stringent rules, with the promulgation of Ubi periculum. Cardinals were to be secluded in a closed area and not accorded individual rooms. No cardinal was allowed, unless ill, to be attended by more than two servants. Food was supplied through a window to avoid outside contact. After three days of the conclave, the cardinals were to receive only one dish a day. After another five days, they were to receive just bread and water. During the conclave, no cardinal was to receive any ecclesiastical revenue.Goda, Paul (15 April 2005). "Papal Election Procedure: Incarnate History and Faith in a Higher Good" . Jurist Forum, University of Pittsburgh School of Law. , cooks and servers are also sworn to secrecy, and may not serve food such as ravioli and whole chicken, which may conceal messages.
In 1276, Adrian V abolished Gregory X's strict regulations. Celestine V, elected in 1294 following a two-year vacancy, restored them. In 1562, Pius IV issued a papal bull that introduced regulations relating to the enclosure of the conclave and other procedures. Gregory XV issued two bulls that covered the most minute of details relating to the election. The first, in 1621, concerned electoral processes. The other, in 1622, fixed the ceremonies to be observed. In December 1904, Pope Pius X issued an apostolic constitution consolidating almost all the previous rules, albeit with some changes, the Vacante sede apostolica. John Paul II instituted several reforms in 1996.
The location of the conclaves became fixed in the fourteenth century. Since the end of the Western Schism in 1417, they have taken place in Rome, except in 1799–1800, when French troops occupying Rome forced the election to be held in Venice, and normally in what, since the Lateran Treaties of 1929, has become the independent Vatican City State. Since 1846, when the Quirinal Palace was used, the Sistine Chapel in the Vatican has served as the location of the election. Popes have often fine-tuned the rules for the election of their successors: Pope Pius XII's Vacantis Apostolicae Sedis (1945) governed the conclave of 1958, Pope John XXIII's Summi Pontificis electio (1962) that of 1963, Pope Paul VI's Romano Pontifici eligendo (1975) the two conclaves of 1978, Pope John Paul II's Universi Dominici gregis (1996) that of 2005, and two amendments by Pope Benedict XVI (2007 and 2013) that of 2013 and 2025.
Several duties are performed by the dean of the College of Cardinals, who is always a cardinal bishop. If the dean is not entitled to participate in the conclave owing to age, his place is taken by the vice-dean, who is also always a cardinal bishop. If the vice-dean cannot participate, the senior cardinal bishop participating performs the functions.
Since the College of Cardinals is a small body, there have been proposals that the electorate should be expanded. Proposed reforms include a plan to replace the College of Cardinals as the electoral body with the Synod of Bishops, which includes many more members. Under present procedure, the synod may only meet when called by the pope. Universi Dominici gregis explicitly provides that even if a synod or an ecumenical council is in session at the time of a pope's death, it may not conduct the election. Upon the pope's death, both bodies' proceedings are suspended, to be resumed only upon the order of the new pope.Some have proposed the election of the pope by a special synod of bishops. This would imitate some of the Eastern-rite churches where metropolitans and patriarchs are elected by synods of bishops. The method for selecting the synod members would remain controversial. Cardinals and Conclaves , By Thomas J. Reese, S.J., senior fellow at the Woodstock Theological Center, America, 19 November 1994.
During the sede vacante, as the papal vacancy is known, certain limited powers pass to the College of Cardinals, which is convoked by the dean of the College of Cardinals. All cardinals are obliged to attend the general congregation of cardinals, except those whose health does not permit, or who are over eighty. Those older cardinals may choose to attend if they please as non-voting members. Sede Vacante , from Aquinas publishing
The particular congregation that deals with the day-to-day matters of the Church includes the cardinal camerlengo and the three cardinal assistants—one cardinal bishop, one cardinal priest and one cardinal deacon—chosen by lot. Every three days, new cardinal assistants are chosen by lot. The camerlengo and assistants are responsible, among other things, for maintaining the election's secrecy.
The congregations must make certain arrangements in respect of the pope's burial, which by tradition takes place within four to six days of the pope's death, leaving time for pilgrims to see the dead pontiff, and occurs within a nine-day period of mourning known as the . The congregations also fix the date and time of the commencement of the conclave. The conclave normally takes place fifteen days after the death of the pope, but the congregations may extend the period to a maximum of twenty days in order to permit other cardinals to arrive in Vatican City.For a description of John Paul II's burial see A pope among popes
In the case of a papal resignation, the Ring of the Fisherman is placed in the custody of the cardinal camerlengo; in the presence of the College of Cardinals, the camerlengo marks an "X" (for the cross) with a small silver hammer and chisel into the ring, disfiguring it so it may no longer be used for signing and sealing official papal documents.
In his book Light of the World: The Pope, the Church and the Signs of the Times, Pope Benedict XVI espoused the idea of resignation on health grounds, which already had some theological respectability.
On the morning of the day designated by the congregations of cardinals, the cardinal electors assemble in Saint Peter's Basilica to celebrate Mass. Then they gather in the afternoon in the Cappella Paolina in the Apostolic Palace and procession to the Sistine Chapel while singing the Litany of the Saints. The cardinals will sing the "Veni Creator Spiritus", invoking the Holy Spirit, then take an oath to observe the procedures set down by the apostolic constitutions; to, if elected, defend the liberty of the Holy See; to maintain secrecy; and to disregard the instructions of secular authorities on voting. The senior cardinal reads the oath aloud in full. In order of precedence the other cardinal electors repeat the oath, while touching the Gospels. Where their rank is the same, their seniority is taken as precedence. The oath is: Cardinals begin voting for new Pope (video, at 2:40 mins), Daily Telegraph, 12 March 2013. Retrieved 13 March 2013.
The master himself may remain, as may one ecclesiastic designated by the congregations prior to the commencement of the election. The ecclesiastic makes a speech concerning the problems facing the Church and on the qualities the new pope needs to have. After the speech concludes, the ecclesiastic leaves. Following the recitation of prayers, the senior cardinal asks if any doubts relating to procedure remain. After the clarification of the doubts, if any, the election proper may commence. Cardinals who arrive after the conclave has begun are admitted nevertheless. A cardinal who becomes ill or needs to use the restroom may leave the conclave and later be readmitted, but a cardinal who leaves for any other reason may not return.If a cardinal with the right to vote should refuse to enter Vatican City in order to take part in the election, or subsequently, once the election has begun, should refuse to remain in order to discharge his office, without manifest reason of illness attested to under oath by doctors and confirmed by the majority of the electors, the other cardinals shall proceed freely with the election, without waiting for him or readmitting him. The Election of a New Pope , Malta Media.
Although in the past cardinal electors could be accompanied by attendants (""), now the only permitted attendant is a nurse if the Congregation of Cardinals confirms that a cardinal in ill-health requires one. A nurse is permitted during the period of election if necessary. The secretary of the College of Cardinals, the master of papal liturgical celebrations, two masters of ceremonies, two officers of the Papal Sacristy and an ecclesiastic assisting the dean of the College of Cardinals are admitted to the conclave. Priests are available to hear confessions in different languages. Two doctors are also admitted. A strictly limited number of servant staff are permitted for housekeeping and the preparing and serving of meals. All require prior approval from the Cardinal Camerlengo and the three Cardinal Assistants.
Secrecy is maintained during the conclave. The cardinals and staff are forbidden to disclose any information relating to the election. They may not correspond or converse with anyone outside the conclave by any means. Violating this oath, or an outsider eavesdropping, is punished by excommunication latae sententiae. Only three cardinal electors are permitted to communicate with the outside world under grave circumstances, with the prior approval of the college, to fulfill their duties: the Major Penitentiary, the Cardinal Vicar for the Diocese of Rome, and the vicar general for the Vatican City State.
Before the conclave that elected Pope Francis, the Sistine Chapel was "Bug sweep" to detect any hidden "bugs" or surveillance devices. There were no reports that any were found, but in previous conclaves press reporters who had disguised themselves as conclave servants were discovered. Universi Dominici gregis specifically prohibits media such as newspapers, the radio, and television. 2 – Secret conclave , from the BBC Wi-Fi access is blocked in Vatican City. Wireless signal jammers are deployed at the Sistine Chapel to prevent any form of electronic communications to or from the cardinal electors. In addition, cardinal-electors are required to surrender their electronic devices upon taking residence at Domus Sanctae Marthae for the conclave.
If no result is obtained after three vote days of balloting, the process is suspended for a maximum of one day for prayer and an address by the senior cardinal deacon. After seven further ballots, the process may again be similarly suspended, with the address now being delivered by the senior cardinal priest. If, after another seven ballots, no result is achieved, voting is suspended once more, the address being delivered by the senior cardinal bishop.
After a further seven ballots, there shall be a day of prayer, reflection and dialogue. In the following ballots, only the two names who received the most votes in the last ballot shall be eligible in a runoff election where a two-thirds majority is still required. The two people voted on, even if cardinal electors, shall not themselves have the right to vote.
The process of voting consist of three phases: the "pre-scrutiny", the "scrutiny", and the "post-scrutiny".
During the first pre-scrutiny of any given morning, the junior cardinal deacon randomly draws nine names. The first three cardinals so chosen become scrutineers, the second three infirmarii and the last three revisers. These cardinals retain their roles for the second scrutiny of the morning, if it is needed.
If both morning scrutinies fail to produce a result, the cardinals re-take the oath to obey the rules of the conclave once they have eaten lunch and again gathered in the Sistine Chapel. A drawing is held to choose new scrutineers, infirmarii, and revisers, and the third scrutiny of the day is then held, immediately followed by a fourth if necessary.
No changes in these rules were made by Benedict XVI in 2007. These were the rules followed, so far as is known, given the secrecy of a conclave, in electing Pope Leo XIV in May 2025.
If any cardinal elector is in the chapel, but cannot proceed to the altar due to infirmity, the last scrutineer may go to him and take his ballot after he has recited the oath. If any cardinal electors are confined to their rooms for this reason, the infirmarii go to their rooms with ballot papers and a box. These cardinals fill out their ballots, recite the oath, and place them in the box. When the infirmarii return to the chapel, the ballots are counted to ensure that their number matches with the number of ill cardinals, whereupon they are transferred to the receptacle holding the ballots cast by those in the chapel.
If no candidate receives a two-thirds vote on the first scrutiny, then a second scrutiny immediately follows. A maximum of four scrutinies can be carried out per day, two apiece in the morning and afternoon.
Under present rules, the oath that cardinals take when casting their votes is only verbal, since they no longer sign their names on the ballots. Previous rules required each cardinal to sign his ballot and mark it with a unique identification code, or motif. He then folded the ballot in two places to cover his signature and motif, leaving only the name of his chosen candidate exposed, and sealed it with wax to create a semi-secret ballot.Ludwig Von Pastor, History of the Papacy, the Bulls of Gregory XV, Aeterni Patris, and Decet Romanum Pontificem 1621–1622.
The wax seals were opened only if a candidate received the bare minimum needed for election. This was to ensure that the apparently elected man had not voted for himself. This was the procedure from 1621 to 1945. The example above is a copy of the three section semi-secret ballot, which was last used in the conclave of 1939. There was no oath taken when actually casting ballots, prior to 1621.
Semi-secret ballots with initials or motif written on the back of the ballot, at the option of the cardinals present and voting, were sometimes used prior to 1621. These secret ballots had no oath taken when the vote was actually cast. At some conclaves prior to 1621, the cardinals verbally voted and sometimes stood in groups to facilitate counting the votes cast. The signature and motif of the elector covered by two folded-over parts of the ballot paper was added by Gregory XV in 1621, to prevent anyone from casting the deciding vote for himself.Francis Burkle Young, Conclaves in the 15th century; also see Cardinals of the Holy Roman Church, a website maintained by Salvador Miranda, via FIU
In 1549, Reginald Pole of England refused to cast the deciding vote for himself, which would then have been followed by the accession to raise his vote total to at least one more than the minimum number needed, and was not elected. In 1492, Cardinal Borgia (Pope Alexander VI) almost certainly privately bribed other cardinals to vote for him. It is certain that he would not have been allowed to cast the deciding vote for himself, without the knowledge and consent of the other cardinals. A procedure called accession gave electors who had not voted for the possible new pope the opportunity to change their votes and make the election unanimous, or nearly so, (except for the vote of the possible new pope). This is how Cardinal Borgia was elected Pope Alexander VI in 1492.
Faced by the mortal challenge to the papacy emanating from Protestantism, and fearing schism due to several stormy conclaves in the late 16th and early 17th centuries, Gregory XV established the procedure of signed ballots to prevent any cardinal from casting the deciding vote for himself. The accession was not ended, but was seldom used until Pius XII abolished it in 1945.Ludwig Von Pastor, History of the Papacy, Since 1945, a cardinal can cast the deciding vote for himself without the accession, though the two-thirds majority rule has always been continued, except when John Paul II had modified that rule in 1996, after 33 ballots, a simple majority being sufficient. The two-thirds majority rule was restored in 2007 by Benedict XVI.Benedict XVI (11 June 2007) " De aliquibus mutationibus in normis de electione Romani Pontificis" Apostolic letter.
Prior to 1621, the only oath taken was that of obedience to the rules of the conclave in force at that time, when the cardinals entered the conclave and the doors were locked, and each morning and afternoon as they entered the Sistine Chapel to vote. Gregory XV added the additional oath, taken when each cardinal casts his ballot, to prevent cardinals wasting time in casting "courtesy votes" and instead narrowing the number of realistic candidates for the papal throne to perhaps only two or three. Speed in electing a pope was important, and that meant using an oath so as to get the cardinals down to the serious business of electing a new pope and narrowing the number of potentially electable candidates.Vacantis Apostolicae Sedis, 8 December 1945, Pope Pius XIIVacante Sede Apostolica, 25 December 1904 Pope Pius X
The reforms of Gregory XV in 1621 and reaffirmed in 1622 created the written detailed step-by-step procedure used in choosing a pope; a procedure that was essentially the same as the process used in 2025 to elect Pope Leo XIV. The biggest change since 1621 was the elimination of the rule that required the electors to sign their ballots, resulting in the detailed voting procedure of scrutiny making use of simple verbal oaths. Beginning in 1945, an elector could vote for himself and then call on God via the oath taken when the vote is dropped into the receptacle, to declare himself to be the best one qualified for the papacy. The use of the accession would prevent this, but is not allowed under the present rules. Beginning with the use of totally secret ballots in the 1958 conclave, it is now possible for a cardinal to cast the deciding vote for himself, without the knowledge and consent of the other cardinals.
Once all votes have been cast, the first scrutineer chosen shakes the container, and the last scrutineer removes and counts the ballots. If the number of ballots does not correspond to the number of cardinal electors present, including sick cardinals in their rooms, the ballots are burnt, unread, and the vote is repeated. If no irregularities are observed, the ballots may be opened and the votes counted. Each ballot is unfolded by the first scrutineer. All three scrutineers separately write down the name indicated on the ballot. The last of the scrutineers reads the name aloud.
Once all of the ballots have been opened, the final post-scrutiny phase begins.
Until 1945, when Pius XII changed the form of ballot to use the unsigned ballots first used in 1958, the sealing wax on the complex type ballots illustrated above had the effect of making the smoke from burning the ballots either black or white, depending on whether or not damp straw was added. Until the 20th century, sealing wax customarily had beeswax mixed into its composition. Burning wax made solely from animal fat does not give as much white smoke as does wax that includes beeswax. Beehivecandles.com
In the 1939 conclave, there was some confusion over the smoke color, which was even more apparent in the 1958 conclave. The lack of sealing wax on the ballots likely explains the confusion over the color of the smoke in the 1958 conclave. The Siri thesis was based on the confusion over the smoke color on the first day of that conclave. "Guiffre"
Since 1963 chemicals have been added to the burning process to augment the smoke's black or white color. Since 2005, a successful election has been announced by the bells of Saint Peter's Basilica ringing at the appearance of the white smoke. 3 – Voting rituals (), from the BBC series "Choosing a Pope"
During the 2013 conclave, the Vatican disclosed the chemicals used. The black smoke is made by adding potassium perchlorate, anthracene, and sulfur. The white smoke is made by adding potassium chlorate, lactose, and rosin. Sugar is burned to produce large amounts of gaseous output, primarily water vapor (steam) and carbon dioxide. Pine rosin produces a "thick white smoke" when heated and contains , which burn to yield a pale, visible smoke.
In practice, any cardinal who intends not to accept will explicitly state this before he receives a sufficient number of votes to become pope, as Giovanni Colombo did in October 1978.Thomas J. Reese SJ, Inside the Vatican: The Politics and Organization of the Catholic Church, Harvard University Press (1996), p. 99.Menachery George, Vatican Adventure http://www.indianchristianity.com/html/menachery/html/GeorgeMenachery.htm
Since the imposition of the age-restrictions on Cardinals aged 80 and older by Pope Paul VI in 1970, the Dean of the College of Cardinals has participated in a conclave only once, and has never confirmed the election of an elected Pope. Jean Villot presided the August 1978 and October 1978 papal conclaves on behalf of then-Dean Carlo Confalonieri, and confirmed the elections of Albino Luciani and Karol Wojtyla, respectively. In 2005, because Joseph Ratzinger, the dean, was elected Pope, the duties of confirming the election fell into the hands of the vice-dean, Angelo Sodano. In 2013, Giovanni Battista Re was the senior cardinal bishop (who later became dean himself in 2020) who confirmed the election of Pope Francis. In 2025, the presiding cardinal over the conclave was Pietro Parolin, who confirmed the election of Robert Francis Prevost.
During the announcement for Pope Benedict XVI's election, the protodeacon, Cardinal Jorge Medina, first greeted the crowds with "Dear brothers and sisters" in several different languages before proceeding to the Latin announcement. This was not done when Pope Francis and Pope Leo XIV were elected.
In the past, the protodeacon has himself been elected pope. In such an event, the announcement is made by the next senior deacon, who has thus succeeded as protodeacon. The last time the cardinal protodeacon was elected was in 1513, when Giovanni de Medici was elected as Pope Leo X and the next senior cardinal deacon Alessandro Farnese (the future Pope Paul III) made the announcement. After the election of Pope Leo XIII in 1878, Protodeacon Prospero Caterini appeared and started to make the announcement but was Stage fright, so another made it for him.
Following the announcement, the senior cardinal deacon retreats, and papal aides unfurl a large, maroon banner that out of practicality often bears the late pope's arms in the centre, draping it onto the railing of the basilica's loggia.Menachery George, Vatican Adventure, Election of John Paul II, http://www.indianchristianity.com/html/menachery/html/GeorgeMenachery.htm During John Paul II's announcement, the inner portion of the arms of Paul VI were simply covered due to the short pontificate of John Paul I not allowing sufficient time for a banner with the latter's arms to be created. For Francis's announcement, there was no image of his predecessor's arms due to Benedict XVI still being alive. For Leo XIV's announcement, the banner featured the arms of the Holy See. During Pope Pius XI's first appearance following his election at the 1922 conclave, the banner showed the arms of Pope Pius IX instead of the arms of his immediate predecessor Pope Benedict XV.See for example the image at the article "How new Pope is elected" at Pophap
The new pope then emerges onto the balcony to the adulation of the crowd, while a brass band in the forecourt below plays the Pontifical Anthem. He then imparts the Urbi et Orbi blessing. The pope may on this occasion choose to give the shorter episcopal blessing as his first apostolic blessing instead of the traditional Urbi et Orbi blessing. This happened most recently with Pope Paul VI after his election at the 1963 conclave. Elezione Papa Paolo VI (1963) . YouTube. Accessed on 22 December 2012.
Beginning with Pope John Paul II, the last four popes elected, including Pope Leo XIV, have chosen to address the crowds first before imparting the Urbi et Orbi blessing. Also, at Pope Francis's first appearance, he first led the faithful in prayers for his predecessor and then asked them to pray for himself, before imparting the Urbi et Orbi blessing. Pope Leo XIV spoke in Spanish in part of his remarks, the first time a pope has used a language to address a crowd other than Italian following a conclave. Leo XIV was also the first observed to have used written notes while addressing the crowd.
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