This campaign is going to a contested convention.
Doubtful. An opinion at best.
I will gladly vote for Cruz and hesitantly vote for Kasich.
OK.
If Trump gets the nomination, he won't win the general election
An opinion at best.
Based on the fact that Trump held private conversations with the Clintons just prior to his announcing his run, the Democrats will have accomplished their intended goal, which is to destroy the Republican party and retain the presidency.
Speculation at best.
You: An opinion at best.
Since you and your candidate love to cite polls: