Midterm elections: Virginia, DC primaries and Alabama, Georgia runoffs to watch on Tuesday

WASHINGTON – The District of Columbia and Virginia will hold primary elections Tuesday, featuring an incumbent mayor seeking a third term and competitive Republican primaries in districts that could determine if the GOP regains control of Congress. 

In Alabama and Georgia, voters will return to the polls a month after their May primaries in a number of runoff elections. Republicans will determine which candidate will likely succeed longtime retiring Sen. Richard Shelby in the Alabama Senate runoff, a race that has seen Trump endorse one candidate only to withdraw the endorsement and back his opponent. Trump's influence will also be tested in two House runoffs in Georgia, where his chosen candidates trailed in the initial primary results. 

Prep for the polls: See who is running for president and compare where they stand on key issues in our Voter Guide