Location: Belmont University in Nashville.

How to watch: All major TV stations

The moderator: Kristen Welker, NBC News White House correspondent and co-anchor of “Weekend Today.” She is only the second Black woman to serve as the sole moderator of a presidential debate. The first was Carole Simpson.

Topics announced: The moderator and the Commission on Presidential Debates will announce topics a week before the debate, but as in the first debate, there will be six topics. Each will get 15 minutes.