Normally a third party candidate will split the Republican vote insuring a Dem victory, but I don't see any choice this time around. If Trump exits, then the GOP will resume pushing for a sure loser like Jeb or Christi... insuring Hillary's win.
“I think the GOP is completely corrupted...”
They are all corrupt! It’s not about what’s best for the nation, but rather what’s best for the establishment / elites that run the government. D.C. is a cesspool.