Political commentator Rachel Maddow is used to having her say. This time she used a full-page ad in The Boston Globe.

The popular liberal TV host came out swinging on Friday against the new senator from Massachusetts, Scott Brown, who has suggested in a fund-raising letter that Maddow will run against him in 2012. SENATE/BROWN

“I’m not running against Scott Brown … It’s just not true. Honestly. I swear. No, really,” Maddow said in the ad.

Maddow, a Rhodes Scholar and the first openly gay anchor to host a prime-time news program in the United States, lives in Hampshire County in western Massachusetts.

“It’s standard now for conservatives to invent scary fake threats to run against,” Maddow said. “Senator Scott Brown’s only been in DC seven weeks, but he already seems to be fitting right in with how conservatives operate there.”