The fourth Republican presidential debate will feature the smallest candidate lineup yet, with only four participants.
Candidates needed at least 6% in national or early-state polls and 80,000 unique donors to qualify.
The debate, at the University of Alabama, includes Ron DeSantis, Nikki Haley, Vivek Ramaswamy, and Chris Christie.
Donald Trump is skipping the debate again, hosting a fundraiser in Florida.
Asa Hutchinson and Tim Scott, who appeared in earlier debates, did not qualify, while Doug Burgum has suspended his campaign.