Wisconsin's leading business lobbying group said it has purchased $2 million worth of television air time to run a spot in support of Republican Gov. Scott Walker starting Monday.

Wisconsin Manufacturers and Commerce vice president James Buchen said the spot running statewide does not mention any of the Democrats seeking to take on Walker. Instead, Buchen said the spot is designed to make the case that Walker's policies are improving the state.

The massive ad buy comes a little over a week before the May 8 primary. Four Democrats are seeking to take on Walker. They are Milwaukee Mayor Tom Barrett, former Dane County Executive Kathleen Falk, Secretary of State Doug La Follette and state Sen. Kathleen Vinehout.

A pro-Falk group announced a $1 million ad buy for her Thursday.