What a perfect analogy. PERFECT!!!
You and I have been around here long enough to predict with 99.99% certainty that if Romney wins and conservatives in Congress and out here in America attempted to "hold his feet to the fire," they'd discover pretty quickly that the response in Romney's well-organized power elite would be: "Look, the only reason Republicans even have the White House is because we moderates won, so sit down and shut up, conservatives."
And as Romney plays underhanded political hardball, many elected conservatives would be mysteriously silent, and as they saw the true ruthless authoritarian Romney reveal himself as iron-willed "progressive," all the ABO Chicken Littles who voted for him would be wailing, "But we had no choice!"
And it would be a lie: they DID and DO have a choice, and that is to vote so that whichever guys wins has as weak and tepid a victory as possible and goes into office vulnerable, defensive, and easier to dominate.