Whether the elder Bush's presence will help his 63-year-old brother in the South Carolina Republican primary on Saturday remains to be seen.
Republicans are now outraged at Trump for the one conspiracy theory he hasn't actually been pushing.
Donald Trump is coming off his big victory in New Hampshire — and he's got a head start in the crucial South Carolina primary next Saturday.
And just think: The crowd actually applauded at this.
Megyn Kelly asks Jeb: "The question is, what do your rivals do — in particular, what does Trump do?"
In the new ad, George W. Bush tout's Jeb's ability to be a military leader for dangerous times — which might rub some voters the wrong way.