As impeachment drama captivates Washington D.C., “Tucker Carlson Tonight” had its highest rated month in program history this month, while Fox News was the most watched cable network for the 41st consecutive month.

Fox News host Tucker Carlson, who co-founded the Daily Caller, has averaged over 3.4 million viewers this month, including 551,000 viewers in the coveted 25-54 age demographic, according to Nielsen Media Research. Fox News saw its primetime viewership increase by 15% this month, while MSNBC saw their viewership improve by 12%. CNN suffered an 11% drop in primetime viewership. (RELATED: Maddow’s TV Ratings Fall Again As Hannity, Carlson Remain On Top)

Meanwhile, Fox News host Sean Hannity once again led all of cable news, averaging over 3.5 million viewers, including 552,000 in the 25-54 demographic. MSNBC host Rachel Maddow finished third this month, averaging over 3.1 million viewers, including 540,000 in the 25-54 demographic. Fox News’ “The Five” and “The Ingraham Angle” rounded out the top five this month. (RELATED: Maddow’s Ratings Rebound After Several Tough Months, But Hannity, Carlson Still Top Cable News)

Both Hannity and Carlson have been critical of House Democrats’ impeachment inquiry into President Donald Trump. Carlson called the probe “the world’s most stultifying impeachment scandal” during his show earlier this month.