Myth: Democrats and Republicans are different ideological parties: Why you should immediately STOP voting for either Democrats or Republicans, no matter how good the candidates appear to be

I find myself instinctually performing a facepalm whenever political discussions are laid on the table by both people I know and love, and complete strangers. The facepalming only increases as I see more and more posts flood facebook and other social networks with millions of people crying out for their favorite democratic or republican presidential candidate.