Republican U.S. Rep. Joe Walsh and challenger Democrat Tammy Duckworth before a televised debate at the WTTW studios on Oct. 18, 2012, in Chicago. Charles Rex Arbogast/AP hide caption

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An Egraph signed by Philadelphia Phillies baseball player Jimmy Rollins. Egraphs offers an autographed digital picture with a handwritten note and a personalized audio message for $50. Egraphs via AP hide caption

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Scorched pastures are spreading across central Illinois and the rest of the Midwest. Technology and techniques developed from previous droughts like the Dust Bowl are helping to save some of today's crops, but there's no substitute for water. Scott Olson/Getty Images hide caption

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Striking workers picket outside a Caterpillar plant in Joliet, Ill. The work stoppage is now entering its third month. Joseph P. Meier/Sun-Times Media Photo hide caption

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Wisconsin Gov. Scott Walker (center) is greeted by his Cabinet and staff Wednesday at the state Capitol in Madison, a day after defeating Milwaukee Mayor Tom Barrett in a recall election. Andy Manis/AP hide caption

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