I've seen this argument made in several places:
If the Supreme Court decides to strike down the new health care law’s individual mandate to purchase insurance, it will represent a remarkable election-year rebuke for President Obama – the rejection, by the nation’s highest court, of a central provision of his main domestic policy accomplishment.
It might also help him win re-election.
I should say so. A defeat would take an upopular law off the table as a campaing issue. Conversely, if the court upholds the law, it might actually be good for Republicans, who could argue that voters need to put them in office so they can stop the madness. But I don't think the GOP should hope for such campaign help, since it would put in place, as Justice Kennedy noted, a fundamental change in the relationship between citizen and government.