Thanks to Fox’s GOP primary debate, Kelly’s average audience in that key demographic surpassed O’Reilly’s in the third quarter of the year.

O’Reilly has been #1 on cable in the demo every quarterly period since 2005. His dethroning might create some tension in the halls at Fox, but it’s not as if Kelly’s gains are coming at his expense. To the contrary, Kelly’s 9 pm show benefits enormously from the strength of O’Reilly’s 8 pm show.

And O’Reilly remains firmly #1 among total viewers, with 2.87 million per night versus Kelly’s 2.53 million.