Patrons play the slot machines at Harrah's Casino Thursday, May 24, 2012 in Chester, Pa. When Harrah's Chester Casino & Racetrack opened its doors in this struggling city in January 2007, it was the state's third casino, a novelty that pulled in Philadelphia-area gamblers thrilled not to have to drive to Atlantic City. Five years later, Pennsylvania has 11 casinos, four in the Philadelphia area. Harrah's casino in Chester, a long-downtrodden city in the southern suburbs, also is closer to competition in Delaware and Maryland. (AP Photo/Alex Brandon)
Patrons play the slot machines at Harrah's Casino Thursday, May 24, 2012 in Chester, Pa. When Harrah's Chester Casino & Racetrack opened its doors in this struggling city in January 2007, it was the state's third casino, a novelty that pulled in Philadelphia-area gamblers thrilled not to have to drive to Atlantic City. Five years later, Pennsylvania has 11 casinos, four in the Philadelphia area. Harrah's casino in Chester, a long-downtrodden city in the southern suburbs, also is closer to competition in Delaware and Maryland. (AP Photo/Alex Brandon)
