Elections to the United States Senate will be held on November 6, 2018, with 33 of the 100 seats in the Senate being contested in regular elections whose winners will serve six-year terms from January 3, 2019, until January 3, 2025. Currently, Democrats are expected to have 23 seats up for election along with 2 independents who caucus with them. Republicansare expected to have 8 seats up for election. The seats up for election in 2018 were last up for election in 2012, although some seats may have special elections if incumbents die or resign, as has already happened in Alabama. Democrats gained a net 2 seats in the 2016 Senate elections.
The 2018 United States House of Representatives elections will be held on November 6, 2018. Elections will be held to elect representatives from all 435 congressional districts across each of the 50 U.S. states. Non-voting delegates from the District of Columbia and four of the five inhabited U.S. territories[Note 2] will also be elected. The winners of this election will serve in the 116th United States Congress, with seats apportioned among the states based on the 2010 United States Census. Republicans have held a House majority since the 2010 elections, although they lost six seats in the 2016 elections.