Five Republican senators are under scrutiny, as the 2026 midterms approach and party dynamics shift. These senators' past decisions and viewpoints may lead to primary challenges.

Joni Ernst, a senator from Iowa, is facing heat for her stance on Trump's Pentagon pick. Steve Deace, a conservative media personality, hinted at running against her. Iowa Attorney General Brenna Bird also criticized Senate politicking in a public op-ed.

Thom Tillis from North Carolina is another target. He's expressed skepticism about Trump's Cabinet nominees, which could lead to a tough primary. Lara Trump, the president's daughter-in-law, might pose a significant threat.

Susan Collins, a senator from Maine, could face a challenge due to her moderate views. She's broken ranks with her party on key votes, which might upset the right wing of the GOP.

Bill Cassidy, a Louisiana senator, is one of three Republicans who voted to convict Trump. This decision could lead to a primary challenge from Louisiana Treasurer John Fleming.

Lastly, John Cornyn from Texas is eyeing a fifth term. However, Texas Attorney General Ken Paxton might challenge him. Paxton's controversial past could make for a heated primary.

Each of these senators is navigating tricky political waters. Their actions and positions could determine if they face primaries and, ultimately, their political fate.

Will These Republican Senators Face Primaries in 2026?

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