This is a HUGE concern because Pennsylvania is a tight race…

Pennsylvania state police have raided a Delaware County political field office seeking evidence of possible voter-registration fraud, according to court records.

In a warrant filed late last week in County Court, investigators said they were seeking documents, financial information, and lists of employees at the Norwood office of FieldWorks LLC, a national organization that often does street work for Democrats, records show.

The warrant did not specify the nature of the probe, but said agents also 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.”

THIS ISN’T THEIR FIRST RODEO – THEY GOT INTO HOT WATER IN THE 2012 ELECTION:

In 2012, FieldWorks’ voter registration efforts in Ohio sparked some controversy. FieldWorks employees filed thousands of new voter registration cards in the final week before the registration deadline. Some of them were found to be fraudulent.

In that same election, FieldWorks included a cover letter with its mass voter filing warning that it itself viewed scores of the submitted names as fraudulent.

Police in Cincinnati arrested a former Ohio University student in 2012 working in FieldWorks on charges of forging 22 signatures on a petition drive.

READ MORE: PHILLY.COM