Four will participate in Wednesday GOP Presidential debate in Alabama

Four Republican candidates will take the stage in Tuscaloosa, Alabama, Wednesday night for the fourth GOP primary debate: former United Nations ambassador Nikki Haley, Florida Gov. Ron DeSantis, former New Jersey governor Chris Christie, and tech entrepreneur Vivek Ramaswamy. Former president Donald Trump will once again skip the event.

You can watch it on NewsNation starting at 7 p.m.

The 2024 Republican presidential primary field has narrowed, with Doug Burgum dropping out of the race.

The North Dakota governor qualified for the first two debates but missed the third.

To participate in the debate, candidates had to meet the Republican National Committee's debate requirements of at least 80,000 unique donors, with at least 200 unique donors per state or territory in at least 20 states or territories, and garnering at least 6% in two approved national polls or 6% in one national poll and 6% in polls of two different early-primary states.

Haley has emerged as the most viable alternative candidate to Trump in recent weeks, surpassing or tying DeSantis for second place in Iowa, New Hampshire, and South Carolina. Last week, she won the endorsement of the political network led by conservative billionaire Charles Koch. DeSantis's campaign and the super PAC supporting him have faced recent drama, with the PAC that has overseen much of his presidential operation firing its CEO less than two weeks after the previous chief executive resigned.

With the Iowa caucuses just six weeks away, Christie and Haley have both made inroads with independents and anti-Trump Republicans voters, but the overlapping pool of supporters complicates both of their paths in New Hampshire. Haley currently is polling second in the state, but Christie is pulling more than 10% of potential primary voters - a share that could prove essential to GOP consolidation efforts against Trump.

Former Arkansas governor Asa Hutchinson did not qualify to participate, having failed to make the cutoff for the last two debates.