About the only one out there I like (or may vote for) is Scott Walker of Wisconsin.
I could vote for Cruz, but the dems are going to crucify him -- not over conservatism, but over the citizenship issue. Wait and see.
Ultimately, it doesn't matter -who- I support, because I live in a state that will never "go Republican" again (CT). So I guess I have the luxury of "withholding support" from candidates whom I do not approve -- makes no difference.
Having said that, if the Pubbies lose in 2016, and again in 2020, I think it's going to be a L-O-N-G time before they win the presidency again.
Probably never.
My opinion only.
YMMV....