Harris and Biden had a tense exchange in the first debate.
The lineups for the second round of Democratic presidential debates were released Thursday night, with Sens. Elizabeth Warren of Massachusetts and Bernie Sanders of Vermont appearing on the first night and former Vice President Joe Biden and California Sen. Kamala Harris, who butted heads in the last debate, facing off on the second night.
The lineups were determined in three random drawings on CNN, which is hosting the Democrats' 2020 Detroit debate. The debate features 20 candidates and will be held over two nights — Tuesday July 30th and Wednesday July 31st.
Night one will include:
Sen. Elizabeth Warren of Massachusetts
Mayor Pete Buttigieg of South Bend, Indiana
Beto O'Rourke, former Texas congressman
Sen. Amy Klobuchar of Minnesota
Gov. Steve Bullock of Montana
Rep. Tim Ryan of Ohio
John Hickenlooper, former Colorado governor
John Delaney, former Maryland congressman
Marianne Williamson, author
Night two will include:
Joe Biden, former vice president
Sen. Kamala Harris of California
Sen. Cory Booker of New Jersey
Julián Castro, former HUD secretary
Andrew Yang, entrepreneur
Mayor Bill de Blasio of New York City
Sen. Michael Bennet of Colorado
Rep. Tulsi Gabbard of Hawaii
Sen. Kirsten Gillibrand of New York
Gov. Jay Inslee of Washington
The candidate nights were chosen in three different random drawings based on their poll standings.
The criteria to make the debate stage in Detroit was the same as the first debate last month in Miami. Candidates had to qualify by getting support from at least 1 percent of voters in at least three national polls or early state polls, or by raising money from 65,000 unique donors. Most qualified by meeting both criteria, but Bennet, Bullock, de Blasio, Delaney, Hickenlooper and Ryan qualified through polling only.
Overall the lineup is almost identical to the Miami debate, which was hosted over two nights by NBC News, MSNBC and Telemundo. There is one substitution — Rep. Eric Swalwell of California dropped out of the race after the debate, effectively passing the torch to Bullock, who snared his vacated spot.
The benchmarks will change for the third debate on Sept. 12 and potentially a second night on Sept. 13, which will be hosted in Houston by ABC and Univision. To take part in that debate, candidates will have to show they've received donations from 130,000 different donors, including at least 400 from 20 different states. They'll also have to hit at least 2 percent in four different qualifying polls.