Five states hold polls on Tuesday. Here's what to know.

Five states are holding primaries that could determine control of Congress in the upcoming elections. Kansas, Michigan, Missouri, Virginia, and Washington are all pivotal in these races, which are further complicated by ongoing redistricting efforts. The results here could set the tone for the political landscape in the next Congress, making these primaries critical not just for local issues but for national politics as well. The outcomes will likely influence campaign strategies and policy focus in the months ahead.