The third Republican debate will look a lot like the last one.

Ten of the 11 candidates on stage for the Sept. 16 debate on CNN are expected to be on the main stage on Oct. 28, when the party gathers in Boulder, Colo., for an event televised by CNBC.

The only exception is Wisconsin Gov. Scott Walker, who dropped out shortly after the last debate.

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GOP front-runner Donald TrumpDonald John TrumpGOP congressman slams Trump over report that U.S. bombed former anti-ISIS coalition headquarters US to restore 'targeted assistance' to Central American countries after migration deal Trump says lawmakers should censure Schiff MORE will again be center stage. He’ll be flanked by Ben Carson, the retired neurosurgeon who has a tight grip on second place, according to an average of the qualifying polls. 

The other eight candidates who will make the main stage are Sen. Marco RubioMarco Antonio RubioChina's TikTok turns to former lawmakers to help with content moderation policies Hillicon Valley: Warren turns up heat in battle with Facebook | Instagram unveils new data privacy feature | Advocacy group seeks funding to write about Big Tech TikTok adds former lawmakers to help develop content moderation policies MORE (Fla.), former Hewlett-Packard CEO Carly Fiorina, former Florida Gov. Jeb Bush, Sen. Ted CruzRafael (Ted) Edward CruzThe Hill's Morning Report - Dem debate contenders take aim at Warren The Hill's Morning Report - Trump grapples with Turkey controversy This week: Congress returns to chaotic Washington MORE (Texas), former Arkansas Gov. Mike Huckabee, Ohio Gov. John Kasich, New Jersey Gov. Chris Christie and Sen. Rand PaulRandal (Rand) Howard PaulCheney unveils Turkey sanctions legislation CNN catches heat for asking candidates about Ellen, Bush friendship at debate Overnight Defense — Presented by Boeing — Trump isolated amid Syria furor | Pompeo, Pence to visit Turkey in push for ceasefire | Turkish troops advance in Syria | Graham throws support behind Trump's sanctions MORE (Ky.).

There's also a second debate for candidates polling below an average of 2.5 percent but who have hit at least 1 percent in any qualifying poll. That debate will include the same four candidates as last time — former Pennsylvania Sen. Rick Santorum, former New York Gov. George Pataki, Gov. Bobby Jindal (La.) and Sen. Lindsey GrahamLindsey Olin GrahamCheney unveils Turkey sanctions legislation Overnight Defense — Presented by Boeing — House passes resolution rebuking Trump over Syria | Sparks fly at White House meeting on Syria | Dems say Trump called Pelosi a 'third-rate politician' | Trump, Graham trade jabs War of words at the White House MORE (S.C.).

Former Gov. Jim Gilmore (Va.), who did not qualify for last month’s debate, will not qualify for this month’s either. 

CNBC used an average of qualifying polls from the major broadcast networks and Bloomberg from Sept. 17 through Oct. 21 to iron out the field.

Christie, Kasich and Paul tied for the lowest score of the top 10 candidates as of Wednesday afternoon with 3 percent. The 2.5 percent threshold made it essentially impossible for any additional candidates to jump onto the main stage, but both Paul and Christie briefly flirted with that floor.

The pair had dipped below 3 percent as late as Monday and could have been knocked out with at least two additional polls at 1 percent or lower. Instead, both were saved by stronger numbers. 

In the lower-tier debate, Graham didn't qualify until the closing days of the polling period, where he finally showed up on the scoreboard in three of the final polls. 

CNBC’s debate will be moderated by the network’s John Harwood, Becky Quick and Carl Quintanilla.