Jeb was always the smart one according to most of the family biographies done of the Bushs. He was expected to be the one to follow in his father’s footsteps, but while clearly successful in becoming the Governor of Florida, he hasn’t done as well as the dumb brother. Why not? I think this
quote
is instructive:
“Of Ms. Reno’s troubles at her precinct Tuesday morning, Mr. Bush said: “What is it with Democrats having a hard time voting? I don’t know.””

Pissing on the opposition tends to raise turnout of the opposition. And the last thing one wants to do is be encourage turnout of the other side’s base.