AUGUSTA, Maine (AP) — Federal campaign regulators say the U.S. Senate campaign of Benjamin Pollard has failed to file a campaign finance report that was due May 31.

Pollard is one of four Democrats seeking their party’s nomination for the open seat in next Tuesday’s primary. Six Republicans are also running for the seat.

On Friday, the Federal Election Commission said Pollard failed to file a 12-day pre-primary election report.

Pollard acknowledged Friday he had failed to file the report, but said it only involves $600 to $700 in contributions and spending. Pollard, who’s working fulltime as a carpenter, said he would try to fill out the report Saturday.

Commission action against non-filers and late filers is decided on a case-by-case basis and can include fines.

Copyright 2012 The Associated Press.