I disastrous “republican” like Romney would serve one term and lose to a two term democrat who will likely be even further left than Obammy.
That is what I fear as well, and history shows that as a pattern.
Richard Nixon managed to CHANGE, which is probably one of the reasons he was known by so many as "Tricky Dick"
Republicans must always run on the side of liberty to win. Eisenhower, later Nixon, Reagan, Bush.
Democrats can do whatever they want unless the Republican runs on the side of liberty. Then they lose.
Romney will probably need to change his gameplan considerably to win. At the moment he's considered to be as much a leftist as the Democrat (or any conceivable Democrat replacement), so the Republican Conservative base needs much more than he's been willing to give.