Believe it or not, there ARE Republicans who have more moderate opinions and can present evidence of their arguments.
Sadly, while there used to be Republicans like that, there are few left. Partly, the reasonable ones fled their party in disgust when nutjobs like Bush II and Palin, and power-hungry crooks like Tom Delay, Newt Gingrich, John Boehner, etc. became leaders in the party. Partly, they were deliberately driven out by GOP leaders striving for ideological purity. Their "big tent" doesn't have room for anyone who is pro-choice, gay, non-"Judeo/Christian", opposed to unlimited military expansion, etc. Today's GOP would scream that Barry Goldwater is a Communist and run him off.