What the MSM and the GOP-E don't understand is that evangelicals' loyalty is first and foremost to Christ and His Church. We will not compromise that to support a candidate who is an enemy of the Christ's Church. Even if that person had the politics of Ronald Reagan (which of course, Romney doesn't).
This is different than 2008. We could hold our nose and vote for McCain who wasn't one of us but evangelicals didn't generally feel that he was opposed to us. Romney, as someone high the Mormon hierarchy, is opposed to the evangelical church. He wouldn't have gotten there if he wasn't.
Yep, there is a big difference between holding your nose and voting for someone falling far short in politics or all the other things that make up rinos, and crummy, lousy, gut-wrenching choices in elections, versus voting for recognized evil, a dark force that we know is bigger than politics and government.