In a much-watched election on June 5, Republican Scott Walker handily defeated Democrat Tom Barrett in a recall election for governor of Wisconsin.
Walker is on the right wing of the Republican Party and Barrett on the right wing of the Democrats. Walker was first elected in late 2010.
When he took office early last year, Walker launched a drive to smash public worker unions. In response, there were huge mobilisations.
Public sector unions went on strike and organised mass demonstrations in the capital city of Madison, the largest of which mobilised 100,000.