Former Senator Sherrod Brown, Democrat of Ohio, lost his 2024 re-election bid but is running for the office again against a different Republican opponent.
The party is putting up a costly defense of states and districts that President Trump won easily in 2024. And in places like Georgia, strategists wonder if it’s too late.
The political environment has worsened for Republicans as they try to defend control of Congress, though the party has a big cash advantage over Democrats.
His powerful super PAC is suddenly spending heavily on some races, after drawing fire from some Republicans that the group might not throw its weight behind the party’s candidates.