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 BidenTrump campaign emails supporters encouraging mask-wearing: 'We have nothing to lose' Cuba spells trouble for Bass's VP hopes Democrats want Biden to debate Trump despite risks MORE in an anticipated rematch with Sen. Kamala HarrisKamala Devi HarrisCuba spells trouble for Bass's VP hopes Biden should pick the best person for the job — not the best woman Trump adviser Jason Miller: Biden running mate pick 'his political living will' 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 SandersCuba spells trouble for Bass's VP hopes Trump Spanish-language ad equates progressives, socialists Biden's tax plan may not add up MORE (I-Vt.) is second with 16.2 percent, followed by Sen. Elizabeth WarrenElizabeth WarrenCuba spells trouble for Bass's VP hopes Democrats want Biden to debate Trump despite risks Overnight Defense: Embattled Pentagon policy nominee withdraws, gets appointment to deputy policy job | Marines, sailor killed in California training accident identified | Governors call for extension of funding for Guard's coronavirus response MORE (D-Mass.) with 14.3 percent. Harris is fourth with 11 percent support.

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