Second Republican presidential primary debate set for September in California. Here's what to know.

The GOP presidential candidates who faced off on the debate stage on Aug. 23 in Milwaukee, Wisconsin, will soon meet again for another fight.

The Republican Party will hold its second presidential primary debate on Sept. 27 in Simi Valley, California, at the Ronald Reagan Presidential Foundation and Institute.

Six candidates will likely hit the stage in California, a dip from the eight who qualified for the first GOP debate in Wisconsin last month.

Here's what to know about the second debate including where to watch and how qualifications have changed.

How to watch second Republican presidential debate

FOX Business, Fox News, Univision and Rumble are set to broadcast the Sept. 27 debate live at the Ronald Reagan Presidential Foundation and Institute. The debate will also simultaneously stream on Fox Nation.

"We are looking forward to continuing our fair, neutral and transparent primary process in Simi Valley to elect the next President of the United States," RNC Chairwoman Ronna McDaniel said in a press release.

Who will moderate the next presidential debate?

Fox News Media's Stuart Varney and Dana Perino and UNIVISION's Ilia Calderón will co-moderate the second Republican presidential primary debate, the networks revealed Aug. 31.

Calderón will be the first Afro-Latina to moderate a Republican Primary Debate, according to the network.

The first debate was co-moderated by Fox News anchors Bret Baier and Martha MacCallum.

Who qualifies for next Republican presidential debate?

The requirements for the second debate have a higher threshold than the first. Candidates must have at least 50,000 unique donors and poll at least 3% in two national polls or 3% in one national poll and 3% in one early state poll from two “carve out” states recognized by the Republican National Committee.

The first debate only required candidates to receive 1% in three national polls, or 1% in two national polls and two early state polls. The first event also only required candidates to be backed by 40,000 unique donors from 20 different states or territories.

Additionally, the candidates must also have signed the “Beat Biden” pledge to support the eventual Republican nominee, even if it's one of their political rivals.

Which candidates were at the first 2024 presidential debate?

Eight GOP candidates were present at the first debate including Florida Gov. Ron DeSantis, former Vice President Mike Pence, businessman Vivek Ramaswamy, former New Jersey Gov. Chris Christie, South Carolina Sen. Tim Scott, former South Carolina Gov. Nikki Haley, North Dakota Gov. Doug Burgum and former Arkansas Gov. Asa Hutchinson.

DeSantis and Ramaswamy were set to stand center of the stage, while Hutchinson and Burgum stood on the two opposite ends.

Mark your calendar: When is the next presidential election? Everything to know about Election Day 2024.

Who has qualified for the second GOP debate?

So far, six candidates appear to have qualified for the second debate:

Will Donald Trump be at the next presidential debate?

Former President Donald Trump said he would skip the debates due to his large lead in polls. Instead the GOP frontrunner plans to visit the Detroit area to speak with striking auto workers.

"The public knows who I am & what a successful Presidency I had," Trump said on his Truth Social platform. "I WILL THEREFORE NOT BE DOING THE DEBATES!"

Contributing: Sudiksha Kochi

This article originally appeared on USA TODAY: When is the second GOP debate? Date, time, qualifications, moderators