2016 Democratic National Convention - Viewership (10:00 to 11:45 PM Eastern) - Night 1 - Viewers 25 to 54

Nielsen viewership data does not include views on PBS, C-SPAN, or livestreams.[208] About 3.9 million viewed Clinton's acceptance speech on PBS, while a YouTube livestream of Clinton's speech peaked at 250,000 simultaneous viewers.[209] On the final day of the convention, CNN received 11 million "video starts" on desktops and mobile devices.[209]

Reference 1: Viewers.

Reference 2: CNN, NBC, MSNBC, ABC, CBS and Fox News.

Source: http://en.wikipedia.org/wiki/2016_Democratic_National_Convention