JEFFERSON CITY • A new television ad criticizing incumbent U.S. Sen. Roy Blunt for his relationships with Washington D.C. lobbyists and special interests is set to air Friday, according to Missouri Secretary of State Jason Kander's campaign staff.

Called "Question," the ad is backed by the Democratic Senatorial Campaign Committee, which has already given financial aid to Kander's U.S. Senate campaign. But the commercial marks the first time the national party has put money into advertising on Kander's behalf.

"We think it's important that voters in Missouri know what Blunt has been doing and what his record is, and we want to make sure that message can reach as many voters as possible," said Lauren Passalacqua, national press secretary for the DSCC.

The commercial slams Blunt for voting to raise his own salary and living in an $1.6 million house. It also questions if several of Blunt's immediate family working as lobbyists is a conflict of interest.

The narrator of the ad asks, "is Washington working for your family? After twenty years there, it's working great for Roy Blunt's family."