There are 35 seats up for election in the US Senate this year. Republicans are defending 23 seats while the Democrats are defending 12. Democrats need a net gain of three seats to win control of the Senate if Joe Biden wins the presidency and four seats if Donald Trump wins re-election.
CNN: Senate results
Personal vehicles fill the Senate side of the East Front of the US Capitol waiting to pick up Senators and other officials on Jan. 24, 2020 in Washington, DC.
