Observation

I'd like Rubio to get the Republican nomination.  I doubt he will.  The radicals won't like him, and they have the keys to the Republicans' car. 

Of the remaining two, I'd prefer Trump, because if Cruz gets the nomination, he could fire up the conservatives enough to actually win.  At which point, liberals and conservatives alike, we're all screwed.

I still prefer Sanders, though, of all of them.