Gary Charles Peters (born December 1, 1958) is an American politician, lawyer, and former naval officer serving as the senior United States senator from Michigan, a seat he has held since 2015. A member of the Democratic Party, he was the U.S. representative for , which included the eastern half of Detroit, the Grosse Pointes, Hamtramck, Southfield, and Pontiac, from 2009 to 2015 (the district was until 2013).
Peters served as Michigan's junior U.S. senator from 2015 to 2025. Upon U.S. Senator Debbie Stabenow's retirement in January 2025, Peters succeeded her as the state's senior U.S. senator and the dean of Michigan's congressional delegation.
Before his election to Congress, Peters served in the United States Navy Reserve, spent 22 years as an investment advisor, and worked briefly in academia. He was elected to the Rochester Hills City Council in 1991 and represented the 14th district in the Michigan Senate from 1995 to 2002. He was the Democratic nominee for Michigan Attorney General in 2002, narrowly losing to Republican Mike Cox. He was then appointed commissioner of the Michigan Lottery by Governor Jennifer Granholm, serving from 2003 to 2008, when he resigned to successfully run for Congress.
In 2014, Peters was elected to the United States Senate seat being vacated by retiring Democratic incumbent Carl Levin. He was unopposed in the Democratic primary and defeated Republican Terri Lynn Land in the general election. He was the only non-incumbent Democrat to win a Senate election in 2014. Peters was reelected in 2020, defeating Republican challenger John E. James in a close race.
On January 28, 2021, Peters was selected as chair of the Democratic Senatorial Campaign Committee for the 2022 election cycle. He was later selected again for the 2024 cycle.
Peters is the ranking member of the Homeland Security and Governmental Affairs Committee in the 119th Congress. On January 28, 2025, he announced that he will not seek reelection in 2026.
After high school, Peters attended Alma College, where he graduated magna cum laude in 1980 with a Bachelor of Arts in political science and was inducted into Phi Beta Kappa. He later earned a Master of Business Administration from the University of Detroit Mercy in 1984. Peters also holds a Juris Doctor and a Master of Arts in political science from Wayne State University and a Master of Arts in philosophy from Michigan State University.
Peters's reserve duty included time in the Persian Gulf supporting Operation Southern Watch; he served overseas again during increased military activity following the September 11 attacks. Peters attained the rank of lieutenant commander before leaving the Reserve in 2008; his awards include the Navy and Marine Corps Achievement Medal and the Military Outstanding Volunteer Service Medal. In 2018, he received a diploma from the College of Naval Command and Staff, part of the U.S. Naval War College.
From 2007 to 2008, Peters served as the third Griffin Endowed Chair in American Government at Central Michigan University. In that part-time position, he taught one class a semester, plus preparing additional student activities including two policy forums, and developing a journal of Michigan politics and policy, for $65,000 a year. Peters announced his candidacy to run for Congress two months after being hired. Some student and faculty members protested Peters's hiring, saying he could not be objective in the classroom while running for office and that the university job was subsidizing his campaign.
Peters also has taught finance at Wayne State and strategic management and business policy courses at Oakland University.
Peters was a senior policy and financial analyst for the Michigan Department of Treasury and served on arbitration panels for the New York Stock Exchange and the Financial Industry Regulatory Authority.
Peters served as the vice chairman of the Senate Finance, Education, Judiciary and Economic Development Committees. He was also a member of the Natural Resources and the Mental Health and Human Services Committee.
As the Democratic nominee for attorney general, he lost the 2002 election to Republican nominee Mike Cox by about 5,200 votes, a 0.17% margin. Peters decided not to contest the result despite reported irregularities. Several mistakes were reportedly found during analysis, including a precinct in Dearborn that recorded Peters with 96 votes when he actually had 396. The race was Michigan's closest statewide contest since the 1950 gubernatorial race.
In 2003, Michigan Governor Jennifer Granholm appointed Peters as the Michigan Lottery commissioner.
Knollenberg was considered vulnerable due to an increasing Democratic trend in what was once a classic bastion of suburban conservatism. His opponents in 2002 and 2004 had performed significantly below the Democratic base in the district, but he was nearly defeated in 2006 by Nancy Skinner, a former radio talk-show host who spent virtually no money—the closest a Republican had come to losing the district in almost half a century. This led the Democratic Congressional Campaign Committee to target Knollenberg for defeat.
In the 2002 state attorney general race, Peters performed at or above the Democratic base in 72% of the 9th district precincts. In his 1998 state Senate campaign, he performed at or above base in 99% of the precincts.
Peters won the November 4 election by 33,524 votes, taking 52% of the vote to Knollenberg's 43%. Barack Obama carried Oakland County by 15 points; roughly two-thirds of Oakland County was in the 9th. Peters was the fourth person and first Democrat to represent the district since its creation in 1933 (it was the 17th district from 1933 to 1953, the 18th from 1953 to 1973, the 19th from 1973 to 1983, the 18th from 1983 to 1993, and the 11th from 1993 to 2003, becoming the 9th in 2003).
In September 2011, Peters opted to run in the newly redrawn 14th district. The district had previously been the 13th district, represented by freshman Democrat Hansen Clarke. The redrawn district is based in Detroit, but contains a large chunk of Peters's old State Senate district and portions of his old congressional district. Indeed, Peters had represented most of the Oakland County portion of the district at one time or another. Due to Detroit's dwindling population, it was no longer possible to keep the district exclusively within Wayne County.
In the August 2012 Democratic primary, Peters defeated Clarke, who had opted to follow most of his constituents into the reconfigured 14th even though his home had been drawn into the reconfigured 13th (the old 14th), and Southfield Mayor Brenda Lawrence. The 14th was a heavily Democratic, 58% Black district, and Peters was overwhelmingly favored in November. As expected, he bested Republican John Hauler in the general election with 82% of the vote. He was the first white congressman to represent a significant portion of Detroit since 1993.
Peters worked with the Obama administration to obtain debt forgiveness for Chrysler. House Financial Services Committee Chairman Barney Frank said Peters was the "single most effective person" in fighting the forces that wanted to let Detroit go bankrupt. In Congress, Peters opposed a plan to provide disaster relief aid, the funds for which would have come from the Advanced Technology Vehicles Manufacturing (ATVM) loan program.
The Michigan Messenger wrote in 2010 that Peters was "criticizing the leadership of his own party. Peters and three other Democratic legislators... this week formed the Spending Cuts and Deficit Reduction Working Group and proposed a series of bills to cut spending. Peters' bill makes cuts in the federal energy budget." "We have been growing increasingly frustrated with the lack of action and talking about specifics and putting those on the table", Peters said. "We've been frustrated with both Democratic leadership and Republicans."
Peters allied himself with the Occupy Wall Street movement, making an appearance at Occupy Detroit in November 2011. He told reporters: "It's speculation on Wall Street that we're still paying the price for here, particularly in Detroit, that almost brought the auto industry to a collapse because of what we saw on Wall Street. So we put in restrictions, or put in regulations necessary to rein that in, and right now in Washington I'm facing a Republican majority that wants to undo that."
Peters was one of 118 House Democrats who signed a letter to President Obama in 2011 urging him to support the United Nations Population Fund (UNFPA), a multinational organization that provides health services to women, children, and families in more than 150 countries. In 2014, he opposed a Michigan law that prohibits insurers from offering abortion coverage as a standard feature in health plans.
Peters was named senior whip for the Democratic caucus in 2013.
Peters's largest independent supporter was the Senate Majority PAC, which spent almost $3.2million for ads attacking the Republican nominee, Terri Lynn Land. In July 2014, Senator Elizabeth Warren supported Peters at a campaign fundraising event.
While the race was considered competitive early on, various missteps by Land's campaign and her reluctance to appear in public benefited Peters; he had consistent leads in polls late in the campaign.
Peters continued to strongly support Israel during its invasion of the Gaza Strip, sponsoring legislation in 2024 to provide $30 million to support Israeli anti-tunneling operations and for the technology to be shared with the United States for use at its borders. He also voted to defund U.S. support for UNRWA through 2025 after an Israeli campaign to discredit the agency, at the time the primary organization responsible for coordinating humanitarian assistance in Gaza.
In 2025, Peters was in the minority of Senate Democrats that voted not to block the sale of arms to Israel despite rising death tolls from its Gaza war and restrictions on humanitarian aid resulting in widespread famine.
In 2025, Peters was one of 12 Senate Democrats who joined all Republicans to vote for the Laken Riley Act.
He is an Episcopalian and has said his religion is important to him and "gives me comfort in rough times".
Peters is an avid Motorcycle and has made a tradition of annual motorcycle tours of Michigan. He is a member of the Sons of the American Revolution. His ancestor William Garrett served in the Virginia Militia in the Revolutionary War alongside George Washington at Valley Forge during the harsh winter of 1777 to 1778.
He had a net worth between $1.7million and $6.3million at the end of 2014, which ranked him 37th in the Senate in terms of wealth.
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Michigan Senate (1995-2002)
Elections
Tenure
Statewide elections
U.S. House of Representatives (2009–2015)
Elections
2008
2010
2012
Tenure
U.S. Senate (2015–present)
Elections
2014
2020
Tenure
Committee assignments
Caucus memberships
Political positions
Women's rights and abortion
Foreign policy
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Personal life
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External links
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