By Cameron Joseph - 06/21/12 12:36 PM EDT
The ad underscores Baldwin's understanding that she needs to grow support behind her liberal base and appeal to the large number of economic populists in Wisconsin. She'll face the winner of a crowded Republican primary that won't be decided until August.
The campaign did not disclose how much money is behind the ad or where it's running. The Hill rates the race a "toss-up."