Between Nov. 4 and Sunday, CNN has averaged 1.73 million viewers, more than double a year ago, the Nielsen company said. Fox News Channel had 1.56 million and MSNBC had 1.53 million.

It’s the first time since December 2001, the newsy period after the Sept. 11 terrorist attack, that CNN has beaten Fox News in this measurement for as long as a month, Nielsen said.

“Since the day after the election, there has been a clear winner,” CNN said in ads over the weekend that boast of their victory while also seeming to gently tweak President Donald Trump’s false assertion he beat Democrat Joe Biden.

CNN has shown improvement across different parts of the day, although Fox News’ powerful prime-time lineup has continued on top.