Gary Charles Peters Sr. (born December 1, 1958) is an American lawyer, politician, and former military officer serving as the junior United States senator from Michigan since 2015. A member of the Democratic Party, he was the U.S. representative for Michigan's 14th congressional district, which included the eastern half of Detroit, the Grosse Pointes, Hamtramck, Southfield, and Pontiac, from 2009 to 2015 (the district was Michigan's 9th congressional district until 2013). 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 will become Michigan's senior senator when Debbie Stabenow retires in January 2025.