An estimated 24.2 million viewers tuned into primetime coverage, between 10 and 11:45 p.m., on Wednesday night.
That number is still heads above the comparable showing from the Republicans' Night 3 showing the week before, besting it by more than 5 million viewers before additional returns come in from PBS.
http://www.hollywoodreporter.com/live-feed/tv-ratings-dnc-drops-night-915249