Romneycare differs from Obamacare for me because it is a 10th amendment issue. In the debate over Obamacare Congressman would remark that Obamacare must be constitutional because states require individuals to purchase car insurance.  But of course states have powers that the federal government does not. I am not an expert on the conditions of the Massachusetts health care market prior to Romneycare and whether Romneycare was worse or better than what the alternative was.  I would prefer that health care be provided through the market system.  It clearly is one of the most government-interfered industry in the economy, so I doubt the alternative to Romneycare was a free market in health care.  I do know that Romney has stated numeroud times that he would repeal Obamacare as his first priority in Washington.  That leads me to believe that if a Republican Congress passed a repeal of Obamacare, Romney would sign it.

The question really is whether Mr. Romney is conservative enough.  We may prefer Ron Paul, but Congressman Paul is not going to win the nomination.  In 2008 Senator Santorum endorsed Romney stating that Romney was a conservative.  I think he is conservative enough.