Given that Trump would never accept the Second Banana position, there is only one logical person to support in the primaries -- Trump. He has given every indication that he wants Cruz as his right hand in some vital capacity. Cruz could then follow Trump for another 8 years. But if we elect Cruz now, we don't get half of what Trump has to offer -- we may not get much at all. He can retire to Scotland where he has large holdings.
Plus, Cruz is too openly evangelical to win the general at this time with our dumbed-down and debauched nation, which is in need of the Twelve Steps to break its addiction to selfish, sensual, narcissistic stupid, short-term and anti-religious impulses.
I don't understand how they figure Cruz would get any crossover votes without which a Republican candidate can not win...