So far, the only certainty is this: Trump will lose big in a general election (running against either Clinton - who will unleash hellfire on Trump, making the primaries look like a knitting circle, or Sanders - if Hillary is indicted).
Again, we have to go back to the question I posed a long time ago:
Why would the GOP put up with Trump's candidacy from the very start?
If Cruz wins big in Texas, the number of candidates should narrow down to at most three.
Again, think: why would David Duke endorse Trump NOW, right before the crucial super tuesday primaries?