[Wallace T.]

In 2008 and 2012, McCain and Romney, respectively, lost in part due to several million conservative voters unwilling to vote for the lesser of two evils. Moderate and liberal Republicans play this game too, as happened with Ken Cucinelli in Virginia. Unless Trump is the nominee or pledges to support whomever the convention chooses, a large chunk of his voters go away, perhaps for an independent run by the New York real estate developer.

Where Buchanan, Perot, and Wallace failed, Trump and possibly Sanders may succeed in ending the two party duopoly that has dominated American politics since the beginning of the republic.

[Alcibiades]

Agree completely.

Whoever the GOP sends Trump, Cruz, other is going to lose a huge block of voters who want to stick by their man. The party is wasting its turnout advantage.

As soon as the GOP announces a candidate the dems will unite. They’ll use fear tactics claiming Trump wants to end abortion or Cruz wants to invade Syria or Ryan wants to kill social security and the Bern supporters will all line up.