You can call republicans "evil" like I can call democrats "whiny bitches".
Point is, most people vote according to which president represents their social, racial, or economic background. We could sit here all day and argue about politics, but I'd win.
As for you voting Democratic in a household of Republicans: it depends where you live (cuz im too lazy to check your profile). If you live in Massachusetts, then you can take pride in the fact that your one vote over-powered all the "ignorant republicans". If you live in Texas, then you're retarded to vote for anyone BUT G.W.
Anyway, it's still good to hear you took a stand for what you believe even if it was different from the rest of your family.
btw: if they had more support, i'd vote libertarian. i'd consider myself somewhere between republican/libertarian.