WASHINGTON, Oct. 11 (UPI) -- An estimated 66.5 million people tuned in to watch the second presidential debate between Hillary Clinton and Donald Trump, a sharp drop from the record audience for their first debate.
The ratings company Nielsen said the candidates had a record 84 million viewers for the first debate on Sept. 29. The drop in Sunday's ratings also came as increased options for sports fans.
The first debate's only real competition was Monday Night Football, airing on ESPN. For the second debate, NBC showed its national Sunday night NFL game instead of the debate. There was also a playoff baseball game being broadcast on TBS during the debate, another siren call for sports fans.
The debate was also streamed live on Facebook and Twitter, with both social media companies reporting large spikes in activity Sunday night, coinciding with the debate.
In all, it generated 62 million interactions on Facebook and Twitter from 18.2 million people.
The Nielsen ratings do not include anyone streaming the debate online, or viewing on CSPAN.
Among broadcast networks, CBS had the largest audience, with 16.5 million viewers. CNN won the cable battle with 11.2 million viewers, boosted by the fact CNN anchor Anderson Cooper was one of the moderators.