(By Joshua Roberts/Bloomberg)

At this point, more prospective Republican presidential candidates have endorsed some form of an individual mandate — Romney in his state, Gingrich nationally — than have endorsed Ryan’s Medicare plan. In fact, Gingrich has come out against Ryan’s Medicare plan, calling it “right-wing social engineering.” John Boehner has walked back his support for it, saying he is “not wedded to one single idea.” Michele Bachmann says she’s “concerned about shifting the cost burden to senior citizens.” Ryan’s plan appears to have turned a special election in an extremely Republican district into a dead heat.

This better be a damn good speech Ryan is giving today.