What Happens to the GOP After Trump?
Charlie Cook: Its still a great question how this Republican nomination race will sort out once this Trump nonsense ends. The GOP splits roughly 60-40 these days: 60 percent of its voters are pretty conventional, mainstream Republicans, while the other 40 percent are of a somewhat more exotic variety, up from just a third a decade ago. This latter group is made up of three subgroups: secular, anti-establishment, tea-party adherents; evangelical conservatives driven chiefly by cultural issues; and those who are just really conservative and more ideologically driven than your normal garden-variety Republicans.
Historically, this collection of less-conventional Republicans has loomed large in Iowa, then gradually given way to more-mainstream GOP voters in the final stretch, but the harder-edged Republicans have been on the ascendency and may play an even greater role in choosing the nominee this time around than in the past.
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http://politicalwire.com/2015/07/17/what-happens-to-the-gop-after-trump/