The Choice Of Comrades

Now look who's joined the cult of the Virgin Terri: you guessed it, Ralph Nader.

Could someone explain to me the substantive differences between Nader's politics and, say, Pat Buchanan's. Both are protectionists. Both are isolationists. Both advocate conservative "cultural values," to the point of likening Terri Schiavo's postponed and merciful release to murder.