Five states hold primaries Tuesday, with competitive House and Senate races that could ultimately decide control of Congress next year. The Senate primary has become a test of how candidates farther left on the political spectrum will fare outside liberal cities where they have swept elections this fall. He is hoping to defeat U.S. Rep. Haley Stevens in the Democratic primary to advance to the general election in November. Democratic Rep. Shri Thanedar, the multimillionaire businessman, is running against state Rep. Donavan McKinney, a progressive Detroit native. A crowd of Democratic candidates are competing in a primary in Kansas on Tuesday for a Senate seat, according to Kansas Public Radio.