MIAMI — It’s fight night in Miami.

Most of the 20 contenders who qualified for the first Democratic presidential debates — set to take place over the next two nights — have arrived ahead of Wednesday's forum, which represents the first major inflection point in the Democratic primary contest.

Sen. Cory Booker Cory Anthony Booker3 reasons why Biden is misreading the politics of court packing Bipartisan praise pours in after Ginsburg's death DHS opens probe into allegations at Georgia ICE facility MORE (N.J.) flew in late Tuesday night on an economy class flight. He spent most of the trip with earphones in and glasses pushed down on his nose, quietly studying a black folio of debate preparation materials.

ADVERTISEMENT

Booker will debate on Wednesday night in a group that is headlined by Sen. Elizabeth Warren Elizabeth WarrenHillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns On The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline Democratic senators ask inspector general to investigate IRS use of location tracking service MORE (Mass.), who did a walk through of the Adrienne Arsht Center of the Performing Arts in downtown Miami earlier in the day.

There has already been some sparring among candidates, with Sen. Bernie Sanders Bernie SandersThe Hill's Campaign Report: Trump faces backlash after not committing to peaceful transition of power Bernie Sanders: 'This is an election between Donald Trump and democracy' The Hill's 12:30 Report: Trump stokes fears over November election outcome MORE (I-Vt.) and former Colorado Gov. John Hickenlooper John HickenlooperThe Hill's Morning Report - Sponsored by Facebook - Trump previews SCOTUS nominee as 'totally brilliant' Cook Political Report shifts Colorado Senate race toward Democrat Willie Nelson playing at virtual fundraiser for Hickenlooper MORE making competing remarks about socialism.

Hickenlooper walked through the spin room here at the Ziff Ballet Opera House, an opulent three-story auditorium where hundreds of media figures are gathered in a makeshift press center, telling reporters that embracing socialism will be a surefire general election loser for Democrats.

“The word socialism by itself has a lot of baggage in this country and especially in swing states … it’s not a winning solution and I continue to say you don’t need massive government expansion to change this country," he said.

As Hickenlooper made those remarks, Sanders, a self-described democratic socialist, was in an adjacent room giving an interview to MSNBC’s Kasie Hunt, in which he said that he’ll make the case to voters that socialism shouldn’t be viewed as outside the mainstream.

“I’ll take care of the label, first by telling the American people what I believe,” Sanders said.

“To me, what democratic socialism is about is saying health care is a human right. If you work 40 hours a week you should earn a living wage. Education is a human right, and by the way, we’re going to have a tax system that is fair … we are going to ask the wealthiest and large corporations to pay their fair share and start paying taxes.”

Sanders and Hickenlooper will share the debate stage Thursday night.

Several of the 2020 contenders have walked through the Ziff Ballet Opera House for interviews with NBC, MSNBC and Telemundo, who are sponsoring this debate.

The opposition is also here — Republican National Committee Chairwoman Ronna McDaniel Ronna Romney McDanielNational Urban League, BET launch National Black Voter Day Trump officials defend president's coronavirus response amid Woodward revelations Sunday shows - Trump team defends coronavirus response MORE has been walking around the debate grounds, making the case that Democrats have embraced extremism.

There is potential for the forum to turn nasty, particularly tomorrow night, when Sanders will be on stage with former Vice President Joe Biden Joe BidenPelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Hillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns Fox News poll: Biden ahead of Trump in Nevada, Pennsylvania and Ohio MORE, the front-runner in the race.

But Democratic National Committee Chairman Tom Perez Thomas Edward PerezClinton’s top five vice presidential picks Government social programs: Triumph of hope over evidence Labor’s 'wasteful spending and mismanagement” at Workers’ Comp MORE said he’s not worried about the potential for the debate to devolve into ugliness.

“We’re going to talk about the issues,” Perez told reporters from the floor of the spin room. “There will be nobody talking about hand size. There will be nobody talking about silly nicknames for their opponents, we’ll leave that to the Republicans.”

During a 2016 presidential debate, President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE mocked Sen. Marco Rubio Marco Antonio RubioGOP lawmakers distance themselves from Trump comments on transfer of power McConnell pushes back on Trump: 'There will be an orderly transition' Graham vows GOP will accept election results after Trump comments MORE (R-Fla.), saying that he has small hands.

Perez said he expects the 2020 Democrats are largely on the same page but will litigate their differences over policy proposals without getting personal or nasty.

“I think people want to know what do you stand for, what are you going to fight for and will you fight for the issues that matter to me and can you defeat Donald Trump,” Perez said. “Those are the basic issues that voters are going to analyze, that alignment of values and how they square up … people will look for their values and look for evidence of who can take the fight to Donald Trump.”

Ten Democrats will debate on Wednesday night, led by Warren, Booker and former Rep. Beto O’Rourke (D-Texas). There are more top contenders grouped into the Thursday night debate, which will feature Biden, Sanders and Sen. Kamala Harris Kamala HarrisHundreds of lawyers from nation's oldest African American sorority join effort to fight voter suppression Biden picks up endorsement from progressive climate group 350 Action 3 reasons why Biden is misreading the politics of court packing MORE (D-Calif.), and South Bend Ind., Mayor Pete Buttigieg Pete ButtigiegBillionaire who donated to Trump in 2016 donates to Biden The Hill's Morning Report - Sponsored by Facebook - GOP closes ranks to fill SCOTUS vacancy by November Buttigieg stands in as Pence for Harris's debate practice MORE.

The debate stage was set at random and Perez pushed back on the idea that one night has more star wattage than the other.

“Not in the least,” Perez said. “This is a great field of candidates, you look at the polling and Elizabeth Warren, for instance, is effectively tied for second place. We have a deep bench of candidates and this is the sixth mile of the marathon, and who is going to win the marathon? I have no idea.”