First night of CNN Democratic debate draws 8.7M viewers

CNN's broadcast of the Democratic debates on Tuesday night attracted 8.7 million viewers, according to final ratings compiled by Nielsen Media Research.

Another 2.8 million people watched via the CNN Digital live stream, according to CNN.

The first of two debates from Detroit was watched by approximately 7 million fewer people than the June 26 debate broadcast by NBC, MSNBC and Telemundo, which attracted 15.3 million viewers for the broadcast from Miami.

The cable news network faced formidable competition from ABC's "The Bachelorette," which aired its finale on Tuesday night. NBC also offered up a new episode of "America's Got Talent," which has rated well over the years since its start in 2006.

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CNN will likely see an uptick in viewership on Wednesday night, which was the case with NBC, MSNBC and Telemundo last month for its second of two debates.

Wednesday night's event from the Fox Theatre in the Motor City will feature 2020 Democratic front-runner Vice President Joe BidenJoe BidenGabbard moves to New Hampshire ahead of primary Biden hammers Trump over video of world leaders mocking him Trump's legal team huddles with Senate Republicans MORE in an anticipated rematch with Sen. Kamala HarrisKamala Devi HarrisHarris posts video asking baby if she'll run for president one day Krystal Ball: What Harris's exit means for the other 2020 candidates Saagar Enjeti unpacks why Kamala Harris's campaign didn't work MORE (D-Calif.), who hammered Biden in Miami one month ago, winning praise from critics as the winner of the night.

But Biden still holds a commanding lead in the RealClearPolitics index of polls with 32.2 percent support.

Sen. Bernie SandersBernie SandersGabbard moves to New Hampshire ahead of primary Sanders to join youth climate strikers in Iowa Saagar Enjeti unpacks why Kamala Harris's campaign didn't work MORE (I-Vt.) is second with 16.2 percent, followed by Sen. Elizabeth WarrenElizabeth Ann WarrenGabbard moves to New Hampshire ahead of primary LGBTQ advocates slam Buttigieg for past history with Salvation Army Saagar Enjeti unpacks why Kamala Harris's campaign didn't work MORE (D-Mass.) with 14.3 percent. Harris is fourth with 11 percent support.

--This report was updated at 2:20 p.m.