“Apparently, so are Trump supporters if he doesn’t get the nomination. “
Trump supporters won’t have to do anything special to help Hillary win: she’s guaranteed a win if the GOPe picks their own candidate at the convention, you know, some latter day loser cast from the same mold as loser McCain or loser Romney.
And Trump opponents wouldn't have to do anything special for Hillary to win - he would lose to Hillary in a landslide. Even without a 3rd party candidate from the GOP, up to 40% of the primary voters would rather stay home or vote 3rd party over voting for Trump. If even half of them were to follow through, Trump loses big.