Pennsylvania state police raided a Delaware County political field office looking for potential evidence of voter registration fraud.

According to The Philadelphia Inquirer, a warrant was filed by investigators in a county court Friday stating they were searching for documents, financial information, and lists of employees at the Norwood office of FieldWorks LLC, a national liberal organization often involved in street work for Democratic campaigns.

The warrant itself, The Philadelphia Inquirer reported, did not say the exact purpose of the investigation but did state that agents were looking for “templates . . . utilized to construct fraudulent voter registration forms” and “completed voter registration forms containing same or similar identifying information of individuals on multiple forms.”

In a statement Monday, a spokesman for FieldWorks’ national headquarters in Washington, said the company has “zero tolerance for fraud.”

“FieldWorks is now working with county officials to provide them with information on our program and applications they are investigating,” said spokesman Matt Dorf. “In keeping with our regular practice, we will work aggressively with authorities to seek the prosecution of anyone involved in wrongdoing.”

A FieldWorks staffer found herself in hot water in 2012 when police arrested a former Ohio University student accused of forging 22 signatures on a petition drive.

That same election cycle in Ohio, Fieldworks personnel filed thousands of new voter registration documents in the last week prior to the registration deadline. According to the Inquirer, a number of those registrations were found to be fraudulent.

Polls in Pennsylvania, conducted before FBI director James Comey released his letter to Congress about re-opening the investigation related to the email server of Hillary Clinton, show Clinton ahead of Republican Donald Trump in the Keystone State.

Trump and his running mate Mike Pence made a swing through Pennsylvania on Monday and Tuesday in hopes of driving the ticket’s numbers up.

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