Before her television career, MSNBC host Nicolle Wallace worked in Republican politics. While her very public breakup with the party has been fodder for conversation with other disaffected Republicans on her show, it has also provided an inside look at how the GOP has become Donald Trump’s party. Speaking with another ex-Republican, Tim Miller, Wallace discussed Trump’s latest comments at a Pennsylvania rally Saturday. “Arnold Palmer was all man, and I say that in all due respect to women, I love women. … This man was strong and tough, and I refused to say it, but when he took showers with the…