Squeezing his thumb and forefinger together in the back of a Manchester bar last night, Libertarian presidential nominee Bob Barr told a crowd of 80 that when it counts, there's that much difference between the Republicans and Democrats. Americans, he argued, are looking for something new. "The definition of throwing your vote away is to go into that voting booth and vote for one of two parties that will not change the direction this country's going in," Barr told a crowd of about 80 at Murphy's Taproom. "And that's the Republicans or Democrats."