A Walker victory in the recall would be a devastating blow for public sector unions. They have already wasted millions of their members' dollars on failed recall efforts last year. They lost a special election for the state's Supreme Court. And, their anointed candidate in the primary, Kathleen Falk, was crushed by Milwaukee mayor Tom Barrett. The loss to Walker would demoralize their members ahead of critical Fall elections. Worse, it may inspire other Governors to consider the same reforms, weakening unions across the country.

http://www.breitbart.com/Big-Government/2012/05/26/left-mobilizing-massive-vote-effort-in-wisconsin