HHS Secretary Kathleen Sebelius, overseer of the disastrous Obamacare roll out, i stepping down from her post. But this represents no win for the GOP or conservatism. The ACA, Obamacare is growing roots despite the pitiful roll out so far, and the longer it takes to reverse the law, the less likely it becomes, no matter how badly the program performs. Its political inertia makes it more entrenched as each day passes. Sebelius' departure does nothing to change that.
In fact, the departure helps Democrats in the midterms if only modestly. Obama can argue that despite the flawed roll out, a new team in charge, with fresh energy and ideas will make Obamacare far more successful going forward. It, like every other Obama excuse is flimsy, but it is probably enough with the help of a compliant media, to convince some voters that the problem isn't the law, just the team that was running its initial implementation. They can make the case that going forward things are getting better and will get a whole lot smoother still, downstream.
Further, Sebelius is not going to be replaced by a conservative-minded secretary. Given Obama's record of appointments - from judicial to administrative - an even more liberal replacement is the likeliest scenario. He's always trying to shift the country to the left, at every possible opportunity. And while he has an abysmal record of vetting his appointments going back even further than Tim Geithner, he's gotten a pretty easy ride on his appointments for the most part, and a filibuster-proof process working for him as well.
There's no reason to believe that there is any good for conservatives or the GOP coming out of Sebelius' departure.