HuckCain would make me sad on the science front, though. While McCain is strident in support for fighting global warming, he's wishy-washy about teaching science properly, and Huckabee flat-out doesn't believe in evolution. I haven't looked, but I assume their takes on stem-cell research falls along similar lines ('Meh' and 'MURDER!!', respectively).

Obama and Clinton are both pro-science across the board, as far as I've researched, though (according to notes I took in July for a post I never made) O. likes to answer questions about global warming by changing the subject to foreign oil dependence.