How to watch
The debate, being held at the University of Alabama in Tuscaloosa, will air on cable news network NewsNation at 8 p.m. EST.
It will also be broadcast in the Eastern and Central time zones on the company's broadcast television network, The CW.
The faceoff will be livestreamed on NewsNation's website and on Rumble as well.
The moderators will be Elizabeth Vargas, the anchor of NewsNation's "Elizabeth Vargas Reports"; Megyn Kelly, the former Fox News and NBC News anchor who now hosts "The Megyn Kelly Show" on Sirius XM; and Eliana Johnson, editor-in-chief of The Washington Free Beacon.
-ABC News' Sarah Beth Hensley