The story

A moving graph at the bottom of the CNN screen during Tuesday night's presidential debate measured the reactions of uncommitted voters in the swing state of Ohio, and it seemed to bear out the theory that negative campaigning draws negative voter reactions.

Nearly every time one candidate threw a jab at the other, the voter reaction dipped measurably.

The dips were minor for small digs but slipped further if a candidate continued criticizing his opponent. Read full article »

CNN's Kristi Keck contributed to this report

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