Dem Sen. Bob Casey’s lead over GOP challenger Dave McCormick sharply narrows in three Pennsylvania polls

BETHLEHEM, Pa. — Three new polls show Pennsylvania Democratic Sen. Bob Casey’s lead over GOP challenger Dave McCormick narrowing — with one finding the candidates separated by just 1 point. A joint New York Times, Philadelphia Inquirer and Siena College poll shows Casey (48%) leading McCormick (39%) by 9 points among registered voters — with 13%...