In choosing allies there are only two considerations, can they shoot and will they aim at your enemies.
Cruz has shown that he is not interested in the second.
So, not an ally.
At best something like Stalin in WWII.
False, he just endorsed Trump and Trump accepted his endorsement. The Republic hangs by a thread. Do you want to lose to Clinton ? The polls are very tight with Trump only trailing by perhaps one state. We need thousands of NoTrump voters to change their minds in close, but when nnable states like CO and VA.