Wisconsin Democrats to challenge Republican recall petitions

In the wake of Democrats filing recall petitions for five GOP Senators in Wisconsin, the Republicans have now gotten into the act with three petitions of their own to recall Democratic lawmakers there. However, there appears to have been widespread misconduct in how the signatures were collected and Democrats will challenge their validity.
http://www.dailykos.com/story/2011/04/21/969040/-Wisconsin-Democrats-to-challenge-Republican-recall-petitions?utm