But Trump is not a right winger! That is a problem if you wish to kick only leftists out.The REAL reason the nomination of Trump calls the GOP's judgement into question:
GOP'ers are tired of being lied to by liberals, RINOs, and other big-govt pushers.
The nomination of Trump shows they are smart enough to start booting the leftists out.
Trump is just as effective, if not more so, at kicking ideological conservatives and libertarians out of the party as well! You are left with right wing nutjobs and unprincipled partisans as your base.
This is why Trump nomination is considered disruptive! It turns the GOP into an extremist party in which negotiations and compromise are impossible.
The party has become unelectable!