Welcome to a special debate night edition of On Politics. I’m Lisa Lerer, your host.

Hi everyone. I’m in Detroit, where 10 Democratic presidential candidates, including Senators Elizabeth Warren and Bernie Sanders, have taken the debate stage.

If you’re tuning in to CNN tonight (and let’s face it, you probably are), my colleagues and I will be chatting live about what’s happening onstage. You can join us here, on The Times’s website and app.

We’re collecting the biggest moments here, and if you want a quick primer, here’s what we’ll be watching for.

I’ll be back in the morning with another special edition of On Politics, sharing my thoughts on everything that happens tonight.