LAS VEGAS (AP) — The Nevada State Democratic Party has filed a complaint with the Federal Election Commission claiming Republican congressional candidate Danny Tarkanian accepted an illegal contribution and improperly reported campaign spending.

The complaint filed Wednesday is the second Democrats have filed against Tarkanian this year. Spokesman Zach Hudson says the Nevada party hasn’t heard back from the FEC about their May complaint alleging Tarkanian failed to disclose debt left over from his failed U.S. Senate campaign in 2010.

Democrats say Tarkanian accepted a $2,500 contribution that’s above the legal limit. They also say the candidate didn’t report about $250,000 in campaign spending during the proper reporting period.

Tarkanian’s campaign didn’t immediately return a message seeking comment Wednesday.

Tarkanian is running against Democratic state Sen. Steven Horsford for Nevada’s 4th Congressional District seat.

Copyright 2012 The Associated Press.