Poll shows tight race in upcoming Pennsylvania special congressional election

President Trump won by nearly 20 points in the district in 2016.

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A new poll conducted by Monmouth University found Republican Rick Saccone garnering the support of 49 percent of respondents, compared to 46 percent for Democrat Conor Lamb, well within the 5.5 percent margin of error in the poll of likely voters.

"If all potential voters were likely to cast a ballot next month, Saccone would hold an even larger lead of 48 percent to 41 percent over Lamb in the current poll," Monmouth noted in a press release accompanying the results.

However, only 40 percent of the likely voters tallied by Monmouth had heard of Lamb's pledge, though 18 percent said it increases their likelihood of supporting him.