Republicans vs. Democrats. It's not conservatives vs. liberals, it's authoritarians vs. progressives.
It's Authoritarians (Royalty lovers - L'estate, c'est moi) vs. Progressives (All men are created equal) Republicans are more Authoritarian than Conservative. Conservatives want to pick an imaginary time in the past and declare it to be perfect. Authoritarians have a Father figure complex. Whatever the Father says is right. Anything else is immoral.  So even though there is a streak of Conservatism in the Republican party, it's not really the basis of their morality. Their morality is handed to them by their Father, whatever he says is moral. To disagree with him is immoral. Pretty simple, easy for people who are too tired to think for themselves. In contrast, the moral authority of Democrats comes from their Progressive, American ideals. Progressives believe in the Declaration of Independence: Life Liberty and the Pursuit of Happiness All men are created equal The people agree on how they will be governed No Royal authority is accepted No one is above