Haley indirectly swiped at Trump over growing economic hardships and his foreign policies, arguing that he has waffled on support for Ukraine amid Russia's invasion.

She also targeted the former president over his gripes over the 2020 election, arguing, "We can't live in the past, we can't live in other headlines."

-ABC News' Tal Axelrod

Asked why he should be the GOP nominee instead of Trump, Ramaswamy continued going after Trump, like others on stage, responding: "We've become a party of losers."

"We got trounced last night in 2023," Ramaswamy said, referring to Tuesday's disappointments for conservatives in Kentucky, Ohio and Virginia, adding that there needs to be "accountability in our party."

-ABC News' Meredith Deliso

NBC's Lester Holt posed the first question of the night to DeSantis, asking him why he should be the nominee instead of Trump.

"Now if you look where we are now, it's a lot different than we were in 2016 and Donald Trump's a lot different guy than he was in 2016," the Florida governor said, immediately setting a tone on stage in which the various candidates more bluntly criticized the absent front-runner -- something they had not done throughout much of the early primary campaign.

"He owes it to you to be on this stage and explain why he should get another chance," DeSantis continued. "He should explain why he didn't have Mexico pay for the border wall. He should explain why he racked up so much debt. He should explain why we didn't drain the swamp. He said Republicans were going to get tired of winning. What we saw last night, I'm sick of Republicans losing. In Florida, I showed how it's done."

-ABC News' Alexandra Hutzler

DeSantis just cited his large 2022 victory in Florida as a reason why he’s a stronger candidate than Trump. But I looked into this question a few months ago, and I found that the evidence that DeSantis turned Florida into a red state is pretty thin.

-Analysis by Nathaniel Rakich of 538

“Three out of four Americans agree with a 15-week limit,” Scott said.

Survey data varies on this question. A June 2023 poll sponsored by Susan B. Anthony Pro-Life America, an anti-abortion group, and conducted by the Tarrance Group, found that 77% of respondents said abortions should be prohibited at conception, after six weeks or after 15 weeks.

But this poll was sponsored by a group with a position on the issue, and both questions told respondents that fetuses can feel pain at 15 weeks -- an assertion that is not the universal consensus among medical experts.

Independent polls found a range of results on the question of an abortion ban after 15 weeks. A July 2022 survey from Harvard University’s Center for American Political Studies and the Harris Poll found that 23% of respondents said their state should ban abortion after 15 weeks, 12% said it should be banned at six weeks and 37% said it should be allowed only in cases of rape and incest. Collectively, that’s 72% who supported a ban at 15 weeks or less.

In two subsequent polls, the support for abortion at 15 weeks or less was not as strong. A September 2022 Economist/YouGov poll found that 39% of respondents supported a ban on abortions after 15 weeks, and 46% opposed it. And a June 2023 Associated Press-NORC poll found that for abortion up to 15 weeks, 51% of respondents said they would allow it, while 45% said they would ban it.

-Analysis by Aaron Sharockman of PolitiFact