Trump-Backed Candidates Win Big in Midwest Primaries

Overnight results from a number of key primary races in the Midwest are being seen as a major test of President Donald Trump’s hold on the Republican base as his party fights to keep control of Congress. In Indiana, a majority of incumbent Republican state senators who faced Trump-backed challengers lost their races. The incumbents were targeted by the president after they voted against his call to change the state's congressional map, a move that would've created two additional GOP-friendly s

Steve Kornacki breaks down primary races in Ohio, Indiana

NBC News’ Steve Kornacki breaks down primary races across Ohio and Indiana, including wins for Vivek Ramaswamy in the Republican governor’s race in Ohio and Sherrod Brown winning the Democratic Senate primary in his fight to regain the seat he lost in 2024, and how the races have been a test of the impact of nationwide redistricting efforts.