Among the things the Republicans are "pledging" to do is to repeal the Affordable Care Act and replace it. The problem for Republicans, not surprisingly, is actually coming up with the replacement part--real policies. So, as Think Progress documents, they didn't. There are really no specifics about "what the party would do to control health care spending, improve quality, or pay for its reforms." At least seven of the ideas they present are already in the Affordable Care Act. Here's TP's table comparing the two:
No wonder no one, even on the Right likes this plan.