June 30, 2014 5:07 PM

Alison Lundergan Grimes' ad maker likes to battle in 'red' states

Though he's not a household name, Mark Putnam might be the best Democratic ad-maker in the business, and his reputation for producing visually striking, memorable, emotional and effective ads might be the biggest, if least-discussed, reason Mitch McConnell should be worried this fall.

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