(CNN) Win or lose, Republican Congressman Steve King is set to address supporters at an election night event in Sioux City, Iowa, on Tuesday. But the state's largest newspaper may not be present.

That's because King's campaign has denied credentials to a reporter from the Des Moines Register who wished to cover the gathering.

"We'll go to the venue, but will comply if ordered away," Carol Hunter, the executive editor of the Register, told CNN Business.

The Register reported on the failed credential bid on Tuesday, quoting King's son, Jeff King, a paid staff member on the campaign who denied the request.

"We are not granting credentials to the Des Moines Register or any other leftist propaganda media outlet with no concern for reporting the truth," Jeff King wrote in the email, which was shared with CNN Business.

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