Giannoulias says Kirk helped Rove wreck the economy. Now, he says, Rove is repaying the favor.
"Today I call on Karl Rove to explain who's funding these negative ads, and I call on Congressman Kirk to denounce this corporate-funded smear campaign," said Giannoulias.
"During this campaign, there will be a number of outside groups trying to buy television time. Giannoulias is heavily backed by outside big unions and trial lawyers," Kirk said.
Kirk said he didn't know about the ads until the Giannoulias press conference Sunday. He made his comments at a parade in suburban Romeoville.