It’s hard to tell who’s happiest now that House Budget Chairman Paul Ryan is joining the Republican ticket. Conservatives love him as one of their own, while Democrats see him as making their job a whole lot easier. For months, Democrats have been calling the budget plan that Ryan authored “the Romney-Ryan plan,” and now it’s official. There’s no more pretense, and Democrats are gleefully dusting off their tried-and-true playbooks on running against Republicans for wanting to “end Medicare as we know it” and cutting benefits for seniors to fund tax cuts for the rich.