Madison’s favorite liberal lawmaker will run for Wisconsin’s open Senate seat:

Democratic Rep. Tammy Baldwin of Wisconsin on Tuesday announced a bid for the Senate in 2012.
In a three-minute web video, the six term congresswoman likened herself to retiring Democratic Sen. Herb Kohl and former Democratic Sen. Russ Feingold, who lost his reelection bid in 2010. She pointed to her opposition to the deregulation of Wall Street and the war in Iraq as examples of her progressive credentials. Wisconsin is a battleground state President Barack Obama won with 56 percent of the vote in 2008. But Republicans made significant gains during the 2010 election, capturing a Senate seat and the governor’s mansion.

Baldwin, as you may remember, is a high-profile opponent of Gov. Scott Walker. Back in February, I reported on her long walk down State Street in the capital. She cheered on progressive protesters, many of whom toted radical, socialistic posters.