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Koch-backed group drops $3 million against Democrat In PA Senate race

The Charles and David Koch backed super PAC Freedom Partners Action Fund has purchased a $3 million advertising buy targeting the Pennsylvania Senate race.

David Koch listens to Mitt Romney speak in Washington on Nov. 4, 2011.
David Koch listens to Mitt Romney speak in Washington on Nov. 4, 2011.STEPHEN CROWLEY/The New York Tim

Leigh Ann Caldwell