How to watch the Republican debate unfold in Iowa

Nikki Haley and Ron DeSantis meet Wednesday night in Des Moines for the final Republican presidential debate before the Iowa caucuses on Monday.

CNN will host the debate starting at 9:00 PM Eastern Time.

Where can I look?

CNN will air the debate on cable and stream it for free on CNN.com. Subscribers to the streaming service Max can watch via CNNMax.

Which candidates will there be?

Only three candidates — Mr. DeSantis, Ms. Haley and Donald J. Trump — met CNN’s qualification requirements. To reach the debate stage, candidates had to have at least 10 percent support in at least three different polls among national Republican primary voters or Republican caucusgoers from Iowa.

Mr. Trump, the front-runner, has not attended any of the four previous Republican primary debates. He will not attend either, which will pit Mr. DeSantis, the governor of Florida, and Ms. Haley, the former governor of South Carolina, against each other. Instead, Mr. Trump will join Fox News hosts Bret Baier and Martha MacCallum for a live town hall at the same time as the debate.

In a departure from the four previous debates, the Republican National Committee is not a sponsor of Wednesday’s debate. In December, the party decided to no longer participate in future debates, giving host TV networks the freedom to set their own qualifying rules.

Who are the moderators?

Dana Bash and Jack Tapper, co-hosts of CNN’s Sunday show “State of the Union,” will moderate the debate.

Is this the last primary debate?

No. ABC News and WMUR, a Hearst television station in New Hampshire, will host a debate in that state on January 18. And CNN plans to host another debate on January 21, also in New Hampshire.