Because, if you want to participate in the political process at all, sometimes you support someone who is the [and I know how conservative purists hate this] the lesser of two evils.
Or you can sit the election out protesting that there is no candidate that meets your criteria.
The last election saw about 5 million conservatives take the latter decision. But Romney looks like a pretty good alternative to me right at the moment.
Not me. I have no regret about not replacing one evil with another. And we ALL had an option to vote for someone else. Had we exercized that option, we would not have EITHER evil in office.
One need not waste their vote and support human garbage to participate in the political process. I have no idea why you’d believe something so obviously false.