It's a good news bad news deal for them. The good news is that lots of people still hate it. Obviously, it's easier to tear something down than build something new, and they are capitalizing on this big time. That's not what's really relevant though. What is relevant is that midterms are a loser for the Prez (especially a Dem) and the GOP is in a position to win big this fall by hammering Obamacare. The bad news is that all the GOP plans are basically the same thing so they run the risk of scandal by repealing it and replacing it with essentially the same thing. More good news though is that they don't have to get to drastic. They can hammer ACA for the votes, tweak it a bit to say they did something to fix it, then take credit and carry that into 2016 elections.