This Youtube video is a perfect example of how difficult it will be in the next election cycle (or two) for GOP candidates.

The video shows Rep. Mike Castle (R-Del.), a moderate Republican who hasn’t announced whether he’s running for re-election or for the U.S. Senate next year, at a town hall meeting earlier this month.

A woman gets up, holding a baggie containing her birth certificate, and unleashes a rambling, minute-long tirade tirade about how the president is a “citizen of Kenya.” The crowd hoots and cheers when she’s done. Castle responds, diplomatically: “Well I don’t know what comment that invites. If you’re referring to the president, then he is a citizen of the United States.” That elicits roars and boos from the crowd, so Castle presses on. “You can boo, but he is a citizen of the United States.”

How can a reasonable Republican run for office when he is dependent on pleasing crazed constituents — the rabid GOP base – who froth at the mouth over highly insane conspiracy theories?