Statehouses make health-care policy, guide education, and may redraw congressional districts ahead of 2028. With the stakes high, more than 6,100 legislators will be elected Nov. 3.

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Steve Pajcic, a lawyer and philanthropist in Florida, started a group that is airing ads in Kansas and South Carolina. Florida and Mississippi are next.

© David Robert Elliott for The New York Times; Sarah Warnock/Associated Press; Sean Rayford for The New York Times; Zack Wittman for The New York Times