Even if Romney is a Potemkin conservative (a claim I think has merit but is also exaggerated), there is an instrumental case to be made for him: It is better to have a president who owes you than to have one who claims to own you.
A President Romney would be on a very short leash. A President Gingrich would probably chew through his leash in the first ten minutes of his presidency and wander off into trouble. If elected, Romney must follow through for conservatives and honor his vows to repeal Obamacare, implement Representative Paul Ryan’s agenda, and stay true to his pro-life commitments.
Moreover, Romney is not a man of vision. He is a man of duty and purpose. He was told to “fix” health care in ways Massachusetts would like. He was told to fix the 2002 Olympics. He was told to create Bain Capital. He did it all. The man does his assignments.
In this light, voting for Romney isn’t a betrayal, it’s a transaction.