The state Public Disclosure Commission plans to send a warning letter to the campaign of state Sen. Chris Marr for not mentioning his Democratic Party affiliation in a TV ad.

Phil Stutzman, the PDC's director of compliance, said the commission decided not to open a formal investigation because Marr's campaign agreed to change the advertisement.

The PDC received a complaint about the ad from Curtis Fackler, vice chairman of the Spokane County Republican Party, on Sept. 23.

Stutzman said he viewed the ad and agreed it violated campaign law that requires candidate ads to list party affiliation.

Marr said the lack of a party affiliation in the ad was "an oversight" and corrected as soon as the campaign learned of it. A copy of it on YouTube was still available as of 5 p.m. today, but was pulled by 5:45 p.m.

Baumgartner said Marr is hiding his party affiliation, despite his position as the Majority Whip in the state Senate.

"It just seems that Marr is for some reason embarrassed to be running as a Democrat," Baumgartner said. "The law says you should put your party affiliation on there and you should." 

Marr said he isn't running from his party and said all his other advertising has listed the correct affiliation.

"If Baumgartner wants to make a big issue of it, I suppose they can," Marr said. "I would say that there are more substantive things to talk about."