Kevin Drum believes that "if Romney wins and Republicans gain control of the Senate, Obamacare is toast." Ezra Klein goes further:
[I]f Mitt Romney wins the election and Republicans take control of the Senate, they should repeal the Affordable Care Act. At that point, they will have won two straight elections atop a platform in which repealing the ACA was a central, explicit promise. The American people will have spoken with unusual clarity, and part of what they will have said, whether they meant to say it or not, is repeal the ACA. If Republicans failed to follow through, they would be breaking a central campaign promise.
The Dish 