With two notable exceptions, the Republican candidates really need to take a page from Woodrow Wilson’s playbook.
Of course, like every other man of intelligence and education I do believe in organic evolution. It surprises me that at this late date such questions should be raised.
Woodrow Wilson
Letter to Winterton C. Curtis (29 August 1922)
Update: Sadly, it seems Romney is hedging on the science, presumably to pander to the science deniers that tend to inhabit the Republican base and the Tea Party. He said, “Do I think the world’s getting hotter? Yeah, I don’t know that but I think that it is,” he said. “I don’t know if it’s mostly caused by humans.”
As I’ve said before, if you want to argue policy, that’s fine, but do it honestly. Don’t try to discredit the science just because you don’t like related policy suggestions.