Vice President Kamala Harris and former President Donald Trump will meet on the presidential debate stage for the first time Tuesday night.

Though it’s technically the second presidential debate of the general election, it’s the first since Harris became the Democratic nominee, replacing President Joe Biden as the party’s candidate. That happened after Biden’s disastrous debate exacerbated concerns about his age, leading to a fracturing of support in the party, and his eventual decision to step down and endorse his VP for the top of the ticket.

This debate is being run by ABC News, so you can watch on ABC, the ABC News Live streaming service, Disney+, or Hulu. Other TV networks and channels will also simulcast the debate, and provide streams on YouTube.

The debate starts at 9 p.m. Eastern Time from the National Constitution Center in Philadelphia. There’s 90 minutes of debate time, and two commercial breaks.

ABC “World News Tonight” anchor David Muir and ABC News Live “Prime” anchor Linsey Davis will moderate.

Similar to the first debate, there will be no audience, and microphones will be muted unless it’s a candidate’s turn to speak. Only moderators can ask Harris and Trump questions, and there won’t be opening statements.

Candidates have two minutes to answer questions and two minutes to rebut. There’s also another minute to clarify or follow-up. They won’t have access to pre-written notes or their campaign staff on stage, but they will have a pen and paper to jot things down.

ABC said a virtual coin flip last week determined the who will be at which podium, and the order of the two-minute closing statements. Trump won the coin flip and chose to offer his closing statement last. Harris got to choose her podium position, which will be on the right side of the screen.