The second Democratic presidential debate for a crowded primary field takes place in Detroit next week, where 20 candidates will make their cases on the national stage.

Here’s what to know going into it:

When it’s happening

The debate is split up into two nights: Tuesday, July 30 and Wednesday, July 31. On each night the debate starts at 8 p.m. and concludes at 10 p.m.

How to watch it

The Democratic National Committee also requires this cycle’s debates to be livestreamed. This debate will stream on CNN’s website’s homepage and through its apps, according to a press release from the company. Visit their homepage here.

Who’s debating on which nights

To qualify to participate in the debates, candidates needed to earn at least 1% in three different polls or raise money from 65,000 or more different donors. Determined by a drawing, here’s who will debate on each night:

Tuesday, July 30

U.S. Sen. Bernie Sanders, I-Vt.

U.S. Sen. Elizabeth Warren, D-Mass.

Pete Buttigieg, mayor of South Bend, Indiana

Former U.S. Rep. Beto O’Rourke, D-Texas

U.S. Sen. Amy Klobchar, D-Minn.

U.S. Rep. Tim Ryan, D-Ohio

Montana Gov. Steve Bullock

Former U.S. Rep. John Delaney, D-Md.

John Hickenlooper, former governor of Colorado

Marianne Williamson, author and spiritualist

Wednesday, July 31

Former Vice President Joe Biden

U.S. Sen. Kamala Harris, D-Calif.

U.S. Sen. Cory Booker, D-N.J.

Julian Castro, former secretary of the U.S. Department of Housing and Urban Development

Andrew Yang, buisnessman

U.S. Sen. Michael Bennet, D-Colo.

U.S. Rep. Kirsten Gillibrand, D-N.Y.

Wahsington Gov. Jay Inslee

U.S. Rep. Tulsi Gabbard, D-Hawaii

New York Mayor Bill de Blasio

Who the moderators are

CNN’s Dana Bash, Don Lemon and Jake Tapper.

Where it’s happening

The debates take place at the Fox Theatre in Detroit. Tickets were not sold and hard to come by, according to the DNC.

Read more: