Cruz is a solidly Tea Party conservative. Walker is not. He's a Blue Dog Republican, whose allegiance is with the GOPe corruptocrat machine and the Chamber of Amnesty.
I choose only to vote for a Tea Party conservative. My guy loses, I still win on messaging, on principle. And next time, my guy will probably win. In fact, many conservatives beat Blue Dog Republicans in 2010 and 2014. I won't let you forget that.
I understand your thinking. However after 8 years of degradation of country by the community organizer, it is imperative we do not nominate someone who is more likely to lose to Hillary.
On pure agenda basis, I agree with you Cruz is more pure than Walker. What I am looking at is that Walker won 3 times in a bluish state. That shows me he can win nationally.