Therein lies the problem. Personally, I am not convinced we have that candidate anywhere.
The conservative base cannot and will not carry an election. When we nominate an über-conservative candidate like Cruz, we please the base but we lose swing voters.
If I am being honest, I don't know enough about many of the candidates yet to give a qualified answer. I can speculate, but I'm not sure I'd be informed enough. I'll do some research over the next couple of days and present "my candidate."
As for now, I will say that Chris Christie was the guy I and many others saw as the guy for awhile. I thought it was his race to lose, now I am not so sure. I like Paul Ryan but I can't see him pulling enough votes. I like Ben Carson as well, but the fact that he has never served in politics makes me extremely nervous.