The CBS News debate was the most watched of the year so far and the highest rated debate among adults aged 25-54 since January, the network said.
In August, the Republican candidates' prime-time debate on Fox News Channel drew 24 million viewers, more than double the prior record for a presidential primary debate and the highest non-sports telecast in cable TV history, according to Nielsen. (Reporting by Doina Chiacu; Editing by Jonathan Oatis)