The first TV ad will start airing in Michigan's U.S. Senate race more than 13 months before voters decide the outcome.
A new super PAC on Wednesday announced the ad attacking Democrat Gary Peters. It begins running Thursday on cable channels and goes for three and a half weeks.
The ad parodies the Pure Michigan tourism campaign, likening Peters to "Pure Washington."
The PAC is financed by retired Saginaw-area businessman Paul Mitchell who blames the third-term congressman for increased spending, debt and helping to pass the federal health care law.
Mitchell wants to see if other Republicans run before deciding whether to back the only announced Republican Senate candidate, former Secretary of State Terri Lynn Land.
A message seeking comment on the ad has been left for the Peters campaign.