Adding onto Nathaniel's Google search comment ... debates can serve as a great introduction to some of the lesser-known candidates. Ramaswamy is probably tonight’s big winner in making a name for himself: 59 percent of voters had no opinion or had never heard of Ramaswamy before tonight, according to a favorability question in our pre-debate FiveThirtyEight/Washington Post/Ipsos poll. That’s likely changed after all of the talking he’s done on stage — and we’ll be tracking whether that’s a good or bad thing. Check back in at FiveThirtyEight tomorrow afternoon for our post-debate analysis.
-Analysis by Holly Fuong of FiveThirtyEight

Pence was pressed by moderators if presidents should have to pass a mental and physical test to serve, invoking President Joe Biden's age.

Pence, who is 64, initially joked that "it might be a good idea to have everybody in Washington" pass one.

He then took a serious tone, saying, "No, the American people can make those judgments."

He appeared to take a swipe at Ramaswamy, the youngest candidate on stage, stating the nation doesn't need a president who is too young either.

-ABC News' Alexandra Hutzler

In the front-runner's absence, many of us here at FiveThirtyEight suspected (in part because of some leaked debate memos) that the former president would loom large over the proceedings, with candidates taking shots at him whenever possible. That hasn't really happened tonight, though! What do you make of it?

-Analysis by Maya Sweedler of FiveThirtyEight

Ramaswamy has been far and away the most Googled candidate during the debate tonight. He’s received three times as much search interest as DeSantis or Haley. Now, I’m not sure what that means for his chances — Google searches aren’t votes, and people might just be curious to learn more about him. But I think it does reflect that he has been the story of this debate so far. Whether that’s a good story for him or a bad story is still TBD.
-Analysis by Nathaniel Rakich of FiveThirtyEight

Nikki Haley has been in the race for longer than anyone else on the stage but hasn't had a breakout moment yet. She was clearly aiming to change that tonight, and she did have one of the most memorable back-and-forths of the night when she took Ramaswamy to task over his lack of foreign policy experience. She came out swinging early not just against Biden but against Republicans in Congress, and she was one of just a handful of contenders to make an electability argument against Trump by pointing out his low favorability ratings. But for a candidate who is polling at 3.4 percent nationwide, it's not obvious that was enough.

Burgum's presence was a victory in and of itself for the governor, given his injury today. But he got scant talking time, and his most interesting answer, when he came out definitively against a national abortion ban, isn't likely to earn him many new fans in the GOP.

But here's what I really think. The next debate is not for another month, but tomorrow, Donald Trump will surrender to the authorities in Atlanta. His mugshot will ricochet across the internet and land on the front page of every major newspaper in the country. At that point, will people be talking about tonight's debate? Or will they be back to talking about Trump? I'd put my money on the latter, and that's not good news for anyone on stage tonight.
-Analysis by Jacob Rubashkin, Inside Elections