As someone who reads offerings from all perspectives, it is concerning to me that there are more and more people on both sides who have come to the conclusion that their side is 'losing' because they are not being as ruthless as the other side is.

As for "purging" the Republican Party for the sake of 'purity', historically that has been the first step political parties haver made before seeking to impose a totalitarian regime on any nation--the most unAmerican thing there can be.