Let his votes fall where they may. As long as Jeb is in the running, I do not trust that he and his paymasters won't steal the nomination.
My reasoning is that I want Jeb, Christie, Carly, Kasich, and Rubio in the race long enough so that the establishment vote doesn't consolidate under any one candidate.
I despise Jeb and the whole Bush clan too, but I'm not sure that a Rubio or Christie Presidency would be much better than a President Jeb. So let them all stay in the race until the bitter end so the Party Hack vote gets split among them while an anti-establishment candidate rises to the top. The RNC won't even be able to play the brokered convention card if Trump or Cruz get a majority.