There are many trajectories a campaign can take, especially this close to the election. The focus could be on boosting the middle class, on lowering taxes or even on honoring the troops. But the Obama campaign seems keen to capitalize on a different talking point: One about a certain children’s show featuring a certain yellow bird. But Jon Stewart rails against the Obama camp’s hedge on Sesame Street, which is so strong that even will.i.am has played and remixed the theme song at campaign events.