The Illinois Republican Party has dumped a Senate hopeful after making claims that his GOP rival is gay, CBS News reported.

In a radio ad broadcast Monday, Andy Martin claimed his 2010 Senate Republican primary opponent, Illinois Representative Mark Kirk, is gay.

“Illinois Republican leader Jack Roeser says there is a solid rumor that Kirk is a homosexual,” the ad says in part. “Roeser suggests Kirk is part of a Republican Party homosexual club. Lake County Illinois Republican leader Ray True says Kirk has surrounded himself with homosexuals.”

Martin, a career candidate, has a long history of controversial statements, including once saying he was running for Congress to “eliminate Jew power in America.”

Illinois Republicans responded by dumping Martin from the party.

“His statements today are consistent with his history of bizarre behavior and often times hate-filled speech, which has no place in the Illinois Republican Party,” a GOP statement said.

“Mr. Martin will no longer be recognized as a legitimate Republican candidate by the Illinois Republican Party.”

Kirk's congressional record shows he's a moderate gay ally. He has voted in favor of adding sexual orientation and gender identity to the list of federal hate crimes and outlawing discrimination in the workplace, but he has yet to endorse a bill that would repeal the military's ban on open gay service.

Through a spokesman, Kirk called the allegation that he's gay “untrue.”

“The ad is not true and is degrading to the political process,” Kirk said. “The people of Illinois deserve better.”

Martin, however, has defended his actions, saying he is “telling the voters the truth about who Mark Kirk really is.”

An early December Chicago Tribune poll ranked Kirk the front-runner among candidates seeking the Republican party's February 2 Senate nomination.