I thought there were two correct answers:
'Hell No' - Santorum.
'Go to Hell' - Cruz.
Can definitely respect the straight no, but Cruz is OK too.
Cruz essentially meant “It depends, I’m not going to discuss detail, it would be like trying to play chess with a pigeon.”
I certainly am not put off by Santorum’s answer but leftist interviewers are well versed in crafting questions where any answer can be spun into something negative. Thus the most correct path is to attack the very premise of the question, and do it in a way which allows you to bring the conversation back to the failings of statism.