CNN's broadcast of the Democratic Debate on Tuesday night drew 8.7 million viewers, according to final ratings compiled by Nielsen Media Research.
Another 2.8 million people watched via CNN Digital live stream, according to CNN.
The first of two Detroit debates 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 Miami broadcast.
The cable information network faces stiff competition from ABC's Ergen, which aired its final Tuesday night. NBC also suggested a new episode of "America's Got Talent," which has been rated well in the years since its inception in 2006.
CNN is likely to see a surge in viewership Wednesday night, as was the case with NBC. MSNBC and Telemundo last month for their second of two debates.
Wednesday night's event at Fox Theater in Motor City will introduce Democratic Vice President in 2020. Joe Biden In Expected Rematch With Senator Kamala Harris Kamala Devi HarrisO & # 39; Rourke predicts Democrats "can win Texas" away from Trump in 2020. C NN Baked to Produce Debates, Format: "Service for Serious People" Hill's Morning Report – Progressives, Centrists Confronted in Lively Democratic Debate MORE (D-Calif.), Which struck Biden in Miami a month ago, winning by critics as the winner of the night.
But Biden still holds the leading position in the RealClearPolitics Polls Index with 32.2 percent support.
Sen. Bernie Sanders Bernie SandersYoung Turks Says Marianne Williamson Proves Why "Worth It" to be on the Romney Discussion Scene Call Sanders "All Hats, No Cattle" After Democratic Debate O & # 39; Rourke Predicts Democrats win Texas by Trump in 2020. MORE (I-Vt.) is second with 16.2 percent, followed by Senator Elizabeth Warren Elizabeth Ann Warren. Turkish host says Marian Williamson proved why he "deserves" to be in the debate stage Romney calls Sanders "all caps, no cattle" after Democratic debate Delaney returns to Warren after debate: "He doesn't want to defend" his policies MORE  (D-Mass.) By 14.3 percent. Harris is fourth with 11 percent support.
– This report was updated at 2:20 PM