David Freddoso writes:

Twenty-eight percent of Republicans believe President Obama is not a natural-born citizen of the United States, and 30 percent are "not sure," according to this poll.

But before liberals begin to smirk, here's a poll from 2007, in which 35 percent of Democrats said that President Bush knew in advance about the 9/11 attacks, and 26 percent were not sure.

So if 58 percent of Republicans are living in a delusional fantasy world because they are out of power, then 61 percent of Democrats were doing the same thing until just recently (perhaps they still are). It's a clean, apples-to-apples comparison with a clear lesson: People get a bit kooky when they're out of power, Democrats about 3 points kookier -- which is probably within the margin of error.