MADISON, Wis. (AP) -- Eight people filed nomination papers to run in the recall election against Scott Walker but at least one lacked enough signatures to qualify.

The Government Accountability Board on Tuesday night was reviewing the signatures submitted before the deadline to determine if they had the 2,000 required to get on the ballot.

Democrats who filed are Milwaukee Mayor Tom Barrett, former Dane County Executive Kathleen Falk, Secretary of State Doug La Follette and state Sen. Kathleen Vinehout.

Gladys Huber is a Republican who is running as a Democrat as part of a state GOP plan to ensure there is a primary.

Arthur Kohl Riggs, a protester who frequently videotapes newsmakers in the Capitol, filed to run as a Republican. But Michael Mangan of West Allis, who also filed as a Republican, had only 303 valid signatures.

Hariprasad Trivedi filed as an independent.