Jeb is my third choice too:
Cruz is my top choice, a constitutional conservative who seems to have the right position on every issue.
Walker is my second choice, for his conservatism and executive experience. I just don’t trust him as much as I trust Cruz.
My third choice is any of the interchangeable big government liberals in the campaign, whether that is Jeb Bush, Christie, Romney, Rubio, Hillary, or Biden.
That’s pretty much my thought progression. In any case, I will crawl over broken glass to vote against any possible Democrat nominee. And I strongly believe that voting for a third party candidate is the same as voting for the Democrat nominee.