The worst that can happen if I vote for the Libertarian is that Isakson will be forced into a runoff. Of course that happened to his partner in crime Saxby Chambliss two years ago and Chamblis still ignores his constituents and acts like the pork loving stuffed shirt he was back in his House days.
Isakson ran unopposed in the primary so it's not like we could enforce term limits at the ballot box.
Oh, but... Palin endorsed Chambliss, right? ;)