BOULDER, Colo.—In the tiny storefront that houses the Boulder County Republicans, the air is thick with paranoia. At the front of the crowded room, the county GOP chairwoman, Ellyn Hilliard, is lecturing on voter fraud and the Democratic conspiracy she's convinced is afoot to steal the election. I had expected Boulder Republicans to be a slightly more conservative version of everyone else in this liberal college town—laid-back and crunchy and clad in polar fleece—but that, it seems, is not the case.