It's that time again: The third Democratic primary debate is tonight! Here's what you need to know.

When and where to catch the debate: 📅Sept. 12, Thurs. 🕗8 p.m. ET 📺ABC News, Univision 📍Houston, TX

Each candidate will get: 💬an opening statement 💬1m15s to respond to questions 💬45s for rebuttals

Ten candidates qualified for the debate this time around. The highest polling candidates will stand in the center. (TIME)

There will be four moderators for the night. ABC News “World News Tonight” anchor David Muir...

and Univision anchor Jorge Ramos!

This will be frontrunners former VP Joe Biden and Sen. Elizabeth Warren's first time on the stage together. (TIME)

It will also be women frontrunners Sen. Kamala Harris and Warren's first time on the stage together.

Thursday's debate comes a week after CNN's "Climate Crisis Town Hall." Many expect climate change to be a major focus.

Also, you can bet on gun control being a major topic: In Aug. alone, 53 people died from mass shootings in the U.S. (NYT)

Biden recently came under fire for hosting a fundraiser with Andrew Goldman, the founder of a natural gas company. (NYT)

In June, Biden signed a "No Fossil Fuel Money" pledge to refuse money from oil and gas company executives. (NBC)

Warren, who is tied with Biden as a frontrunner in the race, could go on the offensive and bring the controversy up.

Some candidates have called for a proposed 28th Amendment limiting big money's influence on elections.

Seven presidential candidates have pledged to overturn Citizen's United as their first act as president. (NYT)

Sen. Cory Booker might not be as combative this time around. He recently issued a warning against party infighting.

As always, we'll be live-GIFing the event on giphy.com/news!