They've nominated a man who is for war crimes.
They've nominated a man who believes President George W. Bush lied us into war.
They've nominated a man who has said dangerous, "idiotic" things about NATO and basically invited Russia to invade the Baltic states (Latvia, Lithuania, Estonia). They have nominated a man who supports the president of Turkey who is installing an Islamic state in Turkey!
They've nominated a man who thinks the National Enquirer is a credible news source.
None of those things have been supported by any candidate I've knowingly voted for or any party I've knowingly been a part of. The Republican Party has never held any of those positions. Now it does through it's presidential candidate. So, I am no longer affiliated with the Republican Party.