Susan Collins (Senate - ME): Voted to convict Trump in 2021.
John Cornyn (Senate - TX): With McConnell retiring, Cornyn is the new face of the "Establishment". Trump allies (like Texas AG Ken Paxton) have actively floated primary challenges against him.
David Valadao (House - CA): The only House Republican who voted to impeach Trump who is running for re-election in 2026.
Field (Any other Targeted Incumbent not listed): If a major new target emerges add them as a standalone option.
Thomas Massie (House - KY-04): Voted against the "One Big Beautiful Bill Act"
Bill Cassidy (Senate - LA): Voted to convict Trump in 2021 and was immediately censured by his state party. He is running for re-election and will face a massive Trump-backed primary challenge.