We have to support the most conservative candidate who can win phrase
Common excuse made by the Swamp to endorse the least conservative candidate over the conservative movement's preferred candidate. For example, Swamp member Sen. John Cornyn (R-TX), as NRSC chair, endorsed liberal Charlie Crist over Marco Rubio in 2010. At the time, he stated, "My goal is to add as many Republicans as possible. I looked for the most conservative candidate who can win in a state."