MADISON, Wis. -

Democratic candidate for governor Mary Burke is launching a new ad attacking Gov. Scott Walker for being a part of what prosecutors call a criminal scheme to evade campaign laws.

Walker has not been charged as a part of the investigation, which two judges have halted. Prosecutors are appealing those decisions.

Burke said last week that she would not make the accusations against Walker a focus of her campaign. But on Thursday she planned to launch a new television ad in the Milwaukee, Madison, Green Bay, Wausau, and La Crosse markets criticizing Walker's alleged role in what prosecutors call a "criminal scheme."

Wisconsin Republican Party director Joe Fadness says Burke wants to distract voters from her own record as a part of Democratic Gov. Jim Doyle's administration.