Republicans have a very weird way of showing they have learned the lessons of 2008 and 2012, when they lost the White House twice. To be charitable, Republicans were taught two woodshed lessons in coalition politics ... and they didn't get it.
I think some Republicans are smart, and the ones who are smart are generally true conservatives. But the stupid Republicans are not. (Think "neo-con" and "tea party".)
What demographic do you alienate when you pass voter ID legislation requiring a government-issued picture ID?
What demographic do you alienate when you pass anti-immigrant legislation?
What demographic do you alienate when you pass new restrictions on contraception, abortion clinics and their services?