Updated

A nonprofit evangelical group founded and run by Republican Senate nominee Christine O'Donnell of Delaware is at risk of losing its tax-exempt status for failing to file required federal tax forms.

IRS documents reviewed by The Associated Press show the group -- Savior's Alliance for Lifting the Truth -- is on a list of organizations threatened with revocation of its nonprofit status on Oct. 15 because it has not filed returns for three consecutive years.

The IRS is offering the delinquent groups a one-time reprieve if they get their filings in by the deadline.

O'Donnell, a tea party-backed candidate who stunned the GOP by winning the Senate nomination, founded the group in 1996 and is listed as its current president on the financial disclosure documents she filed with the U.S. Senate this summer. The alliance is a pro-abstinence outreach group aimed at young Christians.

Campaign spokesman Chris Merola said the group is looking into the matter.

The tax issues are the latest revelation involving O'Donnell's background.

She has made incorrect or misleading statements about the vote outcome in her 2008 Senate bid, her education and has rarely held a full-time job. She also has condemned masturbation and said she dabbled in witchcraft as a teenager.

The formerly little-known candidate who is in her third Senate bid defeated Rep. Mike Castle for the Republican nomination on Sept. 14. She now faces Democrat Chris Coons in the November general election.