This week, Comcast ran a TV ad praising Rep. Mike Fitzpatrick (R) for supporting the Medicare prescription-drug program in 2003. "Thanks to Mike Fitzpatrick, close to two million Pennsylvania seniors now benefit from drug coverage," the ad intones. The U.S. Chamber of Commerce paid for the spot.

There's just one little problem. Fitzgerald wasn't a Congressman in 2003. He was elected to Congresss the following year, in 2004.

At the time of the vote, Fitzgerald was a Bucks County commissioner.

Lawyers for the DSCC denounced the ad as "false, leading, and deceptive," and asked Comcast to stop running it. The chamber ran nearly identical ads for 37 congressional and senatorial candidates, the Inquirer reports. "This was not a singular situation," said Jen Psaki, spokeswoman for the Democratic Congressional Campaign Committee. "They had to pull those ads."

The chamber has since revised the ad. Fitzpatrick has distanced himself from it. "There was no coordinated effort between that group and this campaign," he said.