Polls show Trump is even higher with "second" choicers, putting him up above 50 percent. If Trump were to drop out, Rubio would move into second. Ted Cruz has a very narrow appeal.
With Trump in the race, that is the only way Cruz stays in second, and at that, maybe not even for long.
You might be correct. The voters will tell us. One thing is not in doubt — this is the most interesting & consequential POTUS contest since Reagan vs. Carter in 1980.