The GOP’s nightmare year just got a hell of a lot worse:

Former Republican Rep. Bob Barr is expected to announce that he’s running for president as a Libertarian.

His candidacy would be a wild card in the White House race that many believe would hurt Republican Sen. John McCain.

You betcha.

The GOP brass begged Barr not to run. And Sean Hannity’s complete freak out on this clip shows you just how spooked the wingnuts are over this.

Make no mistake: this is a huge blow to the Republicans, who are already fighting with one arm tied behind their backs thanks to Dubya, Iraq, the economy and Dubya.

And, as an added bonus, the Paulites, who were already plotting against McCain, now have a place to go in November.

Go Bob!