I don't think that's true. It's very difficult to unseat an incumbent and generally only occurs under anomalous conditions. As much as evangelicals may not like

I don't think that's true. It's very difficult to unseat an incumbent and generally only occurs under anomalous conditions. As much as evangelicals may not like the idea of a Mormon candidate (which is why McCain beat Romney in '08, btw), I think they were a lot more comfortable with a Mormon like Romney than a secularist like Trump.