Pennsylvania Republican U.S. Sen. Pat Toomey speaks while announcing that he is running for a second six-year term in office, Sunday, Sept. 13, 2015, in King of Prussia, Pa. (AP Photo/Marc Levy)
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Pennsylvania Republican U.S. Sen. Pat Toomey speaks while announcing that he is running for a second six-year term in office, Sunday, Sept. 13, 2015, in King of Prussia, Pa. (AP Photo/Marc Levy)
