Bernanke the Democrat

Gallup conducted a poll the other day about economic issues. Nate Silver picks up on an interesting reversal of sorts:

See, back when Bernanke, the Federal Reserve Chairman, was working for George Bush, he wasn't very popular among Democrats. Now that he is working for Barack Obama, people have had a change of heart. And the opposite has been true for Republicans.

Are people really this partisan? It's the same freakin' guy!