CNN debate sets ratings record for Democrats
The Democratic presidential debate on CNN has set a ratings record for the party.

An average of 15.3 million viewers tuned in for the primetime debate Tuesday night in Las Vegas, CNN reported, citing Nielsen data.

The previous record for a Democratic presidential debate was in 2008, when 10.7 million people tuned in to see Hillary ClintonHillary Diane Rodham ClintonImpeachment hearings don't move needle with Senate GOP GOP divided over impeachment trial strategy 'Too Far Left' hashtag trends on Twitter MORE and Barack Obama face off on ABC.

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The final ratings viewership of the Democratic debate Tuesday was expected to be lower than the first two GOP presidential debates held in August and September.
 
Fox's debate Aug. 6 drew 24 million viewers, while CNN's Republican debate on Sept. 16 drew 23 million viewers, smashing ratings records for both networks. 
 
Both of those debates included Donald Trump, a celebrity real estate tycoon and TV star who is running for the Republican presidential nomination with more than a dozen other candidates. 
 
In addition to TV viewers, CNN reported seeing another 980,000 concurrent live streams of the debate Tuesday. The network's GOP debate saw 921,000 live streams at its peak.
 
 
- This story was updated at 12:57 p.m.