In the end, the number of people who will vote for him vs. Clinton is all that matters.
As badly as conservatives want Rubio or Cruz to be the nominee, neither will be able to capture enough votes to beat Clinton. Their is little enthusiasm from the electorate, outside of “hard line” conservatives, for Cruz. There is little enthusiasm at all for Rubio no matter what segment of the electorate you choose.
The enthusiasm for Trump currently is all reflected in the primary voters who cast their ballots for him. He will get very few votes beyond that in the general election. What constituency will he have beyond those already raving about him? Its not as if he as an unknown that will grow on people over the summer. He is 100% known right now.
sorry, you’re wrong according to polls that have had Cruz beating Hitlery for some time now... are you really unaware of them or just being a typical sTrumpetron ?
ymmv