Rep. Chris Pappas is the first major candidate to announce his bid for the Senate seat and may leave his House seat vulnerable to a GOP flip in doing so.
New York City Mayor Eric Adams said he will run for reelection as an independent, arguing the dismissal of federal charges against him "dragged on too long."
Rep. Derrick Van Orden believes he and Rep. Bryan Steil could lose their House seats if the Wisconsin Supreme Court redraws the state's congressional maps.
Republicans are most concerned about a seat in Florida's 6th District between Republican state Sen. Randy Fine and Orlando teacher Josh Weil, a Democrat.