Five US states are holding primary elections today which could shape congressional control. Kansas, Michigan, Missouri, Virginia, and Washington are all conducting these important contests. Several Democratic incumbents face progressive challengers in closely watched races. Redistricting battles are also influencing the unfolding electoral landscape across these states. These primaries will determine key candidates for upcoming midterm elections.

From House battlegrounds to party fights and Trump's influence, here are the races to follow during Tuesday's primaries.

Voters are going to the polls Tuesday in five states: Michigan, Virginia, Missouri, Kansas and Washington.