Scott Sumner beat me to it, but this is the best recommendation I can see

Nonetheless, Mankiw (who I’ve recommended before) is the perfect choice.  He’d fly through the Senate.  Academically impeccable Bernanke and Mankiw, both Republicans, would form a one-two punch that the hawks couldn’t resist.  And he’d be pushing for the most expansionary policy that is politically realistic

I just don’t see how this isn’t a no-brainer. The spin-doctors can point to it as an example of Obama’s bipartisanship. The electoral structuralist can point to the fact that anything that helps the economy helps Obama’s chances.

The rest of us can be thankful that a sane pro-stimulus voice is on the Fed and perhaps that the high profile of two conservative New Keynesians will drag the right back into the light.