The vote to recall the GOP governor is going to be close, but another outcome is just as possible - that Dems take back the state senate, robbing Walker of a majority to cause more mayhem. From Rachel Weiner at the Post:

Last summer, Democrats ran recall campaigns against six Republican state senators in response to the collective bargaining reforms championed by Walker and passed by the the GOP-controlled legislature. Two Republicans were unseated, so while Democrats failed to take over the state Senate, they narrowed the GOP majority from 19-14 to 17-16.