Wisconsin Republican Gov. Scott Walker gives a thumbs-up as he speaks at his campaign party in West Allis, Wisconsin, on Tuesday, November 4. Walker defeated Democratic gubernatorial challenger Mary Burke. Morry Gash/AP
Burke makes her concession speech in Madison on November 4. Andy Manis/AP
Walker casts his ballot Tuesday, November 4, at Jefferson Elementary School in Milwaukee. Darren Hauck/Getty Images
Burke makes an Election Day campaign stop at a Democratic Party headquarters in Green Bay. The Green Bay Press-Gazette/Getty Images
People cast their ballots at the South Shore Park building in Milwaukee. Darren Hauck/Getty Images
Walker speaks at the Conservative Political Action Conference in March 2013. The Republican survived a recall election in 2012. Pete Marovich/Getty Images
Burke, a businesswoman and former Wisconsin Secretary of Commerce, was challenging Walker on his ability to stimulate the state's economy. She promised to create more jobs. Andy Manis/AP
Walker speaks at a campaign stop at Empire Bucket, a manufacturing facility in Hudson, in September. Stephen Maturen/Getty Images
Burke speaks during a campaign rally last month in Madison. Darren Hauck/Getty Images
Walker and Burke debate in Eau Claire last month. The Eau Claire Leader-Telegram/AP