The Democratic National Committee has released this new ad in the highly contentious special election this Tuesday for Kirsten Gillibrand's old House seat, reminding voters that President Obama has endorsed Dem candidate Scott Murphy:

This campaign has seen some clear themes emerge in the last week and a half. Tedisco has taken the somewhat novel path of of being a Republican running a populist campaign against his Democratic opponent, a businessman, and accusing him of supporting the AIG bonuses. Meanwhile, the Democrat has attached his own brand to the very popular president, and points out at every turn that he has endorsed the stimulus plan, while his opponent has said he would have voted against it.

We've also seen the White House putting its own reputation on the line today -- first with a radio ad starring Joe Biden, and now with this DNC ad featuring the president's image.