Walker ran for Governor of Wisconsin in 2006, but dropped out of the race before the primary election. He ran again in 2010 and won. Shortly after his inauguration in 2011, Walker gained national attention by introducing the Wisconsin Budget Repair Bill; the legislation proposed to effectively eliminate collective bargaining for most Wisconsin public employees. In response, opponents of the bill protested at the Wisconsin State Capitol and Senate Democrats left the state in an effort to prevent the bill from being passed. Nevertheless, the Wisconsin Budget Repair Bill became law in March 2011. Opposition to the law led to an attempt to recall Walker from office in 2012. Walker prevailed in the recall election, becoming the first incumbent governor in the history of the United States to win a recall election.