The gloves are off in the race for the 12th Congressional District.

The campaign of Democratic candidate Bill Enyart, a Belleville attorney, on Wednesday released audio of a radio commercial that the campaign said is being unleashed.

Jason Bresler, Enyart’s spokesman, said the ad has not yet aired but it will air on radio stations throughout the 12th District.

The Enyart commercial criticizes Republican opponent Jason Plummer’s decision not to release his tax returns.

The spot opens with ominous-sounding music, and a narrator asking, “What’s Jason Plummer hiding? He’s running for Congress, but he refuses to make any of his tax returns public.”

The spot uses the word “millionaire” three times and the word “billionaire” once. It accuses Republicans of “extending tax cuts to millionaires like Jason Plummer.”

H/T: bnd.com