Polls will close tonight in seven states and the District of Columbia. It's the largest one-day primary left before the general election. NPR's Ken Rudin and Vox Politics will be keeping tabs on the returns tonight.
MN SEN: Al Franken, the comedian and activist who is seeking the Democratic nomination for the Senate in Minnesota against six lesser-known rivals. The winner takes on Republican incumbent Norm Coleman in November.
NH SEN: Today's primary in New Hampshire is expected to set up a rematch between Republican Senator John Sununu and the person he defeated six years ago, former Democratic Governor Jeanne Shaheen.
DE SEN: In Delaware, Democratic Senator Joe Biden is unopposed for renomination -- state law allows him to run for re-election and vice president at the same time.
New York, Wisconsin, Vermont and Rhode Island are also holding primaries today.
And in Washington, DC, former mayor Marion Barry is defending his city council seat against several fellow Democrats.