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Class 3 (34 of the 100) seats in the United States Senate 51 seats needed for a majority |
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Democratic hold Democratic gain
Republican hold |
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Elections to the United States Senate were held on November 8, 2016. The presidential election, House elections, 14 gubernatorial elections, and many state and local elections were held on the same date.
In the 2016 Senate election, 34 of the 100 seats—all class 3 Senate seats—were contested in regular elections; the winners will serve six-year terms until January 3, 2023. Class 3 was last up for election in 2010, when Republicans won a net gain of six seats.
In 2016, Democrats defended 10 seats, while Republicans defended 24 seats. Republicans, having won a majority of seats in the Senate in 2014, held the Senate majority with 54 seats before this election. Democrats won a net gain of two seats. Republicans will retain control of the Senate for the 115th United States Congress. Only two incumbents lost their seats, Kelly Ayotte of New Hampshire and Mark Kirk of Illinois, both to Democrats Maggie Hassan and Tammy Duckworth, respectively. Despite Republicans retaining control of the Senate, 2016 marks the first time since 1986 that Democrats made a net gain of seats in class 3. This election marks the first time since 2000 in which the party in opposition to the elected or reelected presidential candidate made net gains in the Senate. It is the first and only election where the winning party in every Senate election mirrored the winning party in the Presidential election.