FILE - Wisconsin Gov. Scott Walker speaks to the Illinois Chamber of Commerce in this April 17, 2012 file photo taken in Springfield, Ill. Lost in the hoopla over the effort to recall Wisconsin Gov. Scott Walker after he took on union rights is an ongoing secret investigation that has already ensnared a handful of the Republican governor's former aides. Democrats have started playing up questions about why Walker created a criminal defense fund for himself and whether the governor might face charges next. (AP Photo/Seth Perlman, File)
Both sides of the recall election targeting Wisconsin Gov. Scott Walker are prepared for a razor-thin margin as the Republican tries to become the first U.S. governor to successfully fend off a recall effort.
A brief but bruising campaign ends with Tuesday's election pitting Walker against Democratic Milwaukee Mayor Tom Barrett. It's a rematch of the 2010 governor's race in which Walker defeated Barrett by 5 percentage points.
The effort has shattered state campaign spending records and further divided an already polarized state.
Walker says he's focused on turning out voters who have supported him in taking on public-employee unions. Barrett is seeking to capitalize on the anger over Walker's conservative agenda that began building almost as soon as he took office in January 2011.
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