Masterful Mann and Ornstein at WaPo:

“The Republican Party has become an insurgent outlier — ideologically extreme; contemptuous of the inherited social and economic regime; scornful of compromise; unpersuaded by conventional understanding of facts, evidence and science; and dismissive of the legitimacy of its political opposition.” That passage, which framed a core part of the argument of our 2012 book, It’s Even Worse Than It Looks, was vilified by conservative commentators, called a rant and a parody.

Fast forward to 2016. Incredibly, Republican destructiveness  is even worse than it was four years ago — and the party is paying for it with a surge of anti-establishment populism that is tearing apart its coalitional base.