I think this is a large contributing factor for many Republicans/Libertarians in the 21st century. It is not that so many people love George Bush or are enamored of the Patriot Act or interfering with Terry Schiavo's medical situation. In fact, a lot of people in the GOP (myself included) are more unhappy with the party now than at any time previously during our membership. But when you look at the other side, that is what unifies us.
Howard Dean, Al Sharpton, Maxine Waters, Barbara Boxer, Hillary Clinton, Ted Kennedy, Cynthia McKinney and her anti-Semitic father ... The Democrats simply don't provide a reasonable alternative. These people are disgusting. They are further out of the American mainstream than even a pack of evangelical Christians who want to teach Creationism in high schools ... that's really the bottom line.
MODERN liberalism has come to mean pacifism at nearly all costs, double standards for minority groups, disrespect for the Federal Constitution, deceit, situational ethics, and a desire to add significant Marxist components to our government.
This reason/section could have easily been named Revulsion Caused by the Alternative. The bottom line is, no matter how bad my party may be now, I'd die before I'd give my vote to a Democrat. In view of the lack of integrity that the left displayed during the Clinton administration, the liberals are simply unfit to be entrusted with any leadership roles.