Mentions of Ronald Reagan, president of the U.S. from 1981 to 1989, so far tonight: 20.
Mentions of Donald Trump, president of the U.S. from 2017 to 2021 and current candidate for president: 12.

—Analysis by Nathaniel Rakich of 538

Nathaniel, I'd imagine Vivek's actual words spoken puts him even further ahead of the other contenders on stage. He even acknowledged he was "in a hurry" earlier in the debate, perhaps trying to inject a little humility and self-awareness into his image, especially after his unfavorability rating shot up after the first debate.
-Jacob Rubashkin, 538 contributor

Ramaswamy differed with some of his opponents on the issue of Ukraine, arguing the United States should limit its support for the country in its fight against Russia.

“The reality is just because ... Putin's an evil dictator does not mean that Ukraine is good. This is a country that has banned 11 opposition parties,” Ramaswamy said.

That’s accurate. But it needs context.

Ukraine banned 11 pro-Russian parties — the largest of which occupied 44 out of 450 seats in parliament, according to Radio Free Europe. The leader of the party, Viktor Medvedchuk, is aligned with Putin. Putin is the godfather of Medvedchuk's daughter, Radio Free Europe reported.
-Analysis by Aaron Sharockman, PolitiFact

Burgum gets a question for the first time in a while — on farmers — and turns it into a long foreign-policy answer. He’s trying to remain relevant but always seems to be late to the party on a topic that has already been talked out. According to The New York Times, he has spoken the least tonight: just five minutes and 49 seconds. By contrast, Ramaswamy has spoken the most: nine minutes, 25 seconds.

—Analysis by Nathaniel Rakich of 538

The second debate stage will look mostly like the first, as seven of the eight candidates who took part in the initial August debate qualified for tonight’s event. And just like the first debate, front-runner Trump has decided to skip the event, despite having the polls and donors to make it. To qualify, the RNC mandated that candidates have at least 3 percent support in two national polls, or at least 3 percent in one nationwide survey and two polls from separate early states, based on polls conducted since Aug. 1 that met the RNC’s criteria for inclusion. Candidates also had to attract at least 50,000 unique contributors, with at least 200 from 20 different states or territories.

The RNC raised the polling and donor standards for the second debate, which slightly winnowed the list of participants. The new rules raised the level of support candidates needed in qualifying polls from 1 percent to 3 percent, and the number of unique donors from 40,000 to 50,000. Six of the seven qualifying candidates had little trouble meeting these polling and donor thresholds. However, although Burgum had enough donors, he struggled to poll well enough nationally to qualify. It took until the Saturday before the debate for him to get the national poll at 3 percent he needed. Meanwhile, former Texas Rep. Will Hurd and former Arkansas Gov. Asa Hutchinson came up short of qualification, as Hurd lacked sufficient polls and only got to 50,000 donors on Monday, while Hutchinson didn’t have enough qualifying polls or donors.

—Analysis by Geoffrey Skelley of 538