The chances of that happening if the Democrat wins are less because the Democrat will be opposed both within his/her own party and also outside of that party.
The chances of that happening if McCain wins is practically assured becasue MCCAIN WILL PUSH THE SAME LIBERAL PHILOSOPHY but he will be opposed by few on either side. If we provide McCain with the mantle of the Republican party AND the U.S. presidency, future voters will reject the Republican party, Liberalism will become stronger than ever, and the socialists you fear will find easy power and little organized resistence because the Republicans have destroyed their own party out of FEAR.
On what historical precedent would you base that conclusion?