UPDATED Aug. 24, 2023, at 2:52 PM

Who Won The First Republican Debate?

We partnered with Ipsos and The Washington Post to poll voters before and after the candidates took the stage.

The first 2024 Republican presidential primary debate is in the books, and Florida Gov. Ron DeSantis, former U.N. Ambassador Nikki Haley and businessman Vivek Ramaswamy seem to have made the best impressions.

We know that thanks to fresh data from a FiveThirtyEight/Washington Post/Ipsos poll, conducted using Ipsos’s KnowledgePanel in the hours immediately following the debate. We surveyed the same group of likely Republican primary voters before and after the debate, allowing us to see how much it may have shifted public opinion. All pre- and post-debate numbers below are limited to respondents who watched some or all of the debate.

The over- (and under-) performers

How well likely Republican primary voters who watched the debate expected each candidate to do before the debate versus how well they thought each candidate actually did

We asked respondents how they expected each candidate to do, and how well they actually did, on a five-point scale from “excellent” to “terrible” and converted each answer to a number on a 1-to-5 scale. “Excellent” was equal to 5, “very good” was equal to 4, “about average” was equal to 3, “poor” was equal to 2 and “terrible” was equal to 1. Scores were then averaged to create overall scores for each candidate. Respondents who answered “don’t know” to the expectations or performance questions were excluded.

Before the debate, our poll asked respondents to grade how they expected each candidate to perform on a five-point scale from “excellent” to “terrible.” Then, after the debate, we asked debate watchers to use the same scale to grade how they thought the candidates actually did.

Each candidate largely performed as well as Republican voters were expecting them to, according to their average performance and expectations scores.2Average scores were calculated by assigning a 1-to-5 score to each answer to the expectations and performance questions, where “excellent” was equal to 5, “very good” was equal to 4, “about average” was equal to 3, “poor” was equal to 2 and “terrible” was equal to 1. Scores were then averaged to create overall scores for each candidate. Respondents who answered “don’t know” to the expectations or performance questions were excluded. DeSantis received the highest average grade for his performance, followed closely by Haley and Ramaswamy. This was more impressive for Haley, though, considering that expectations were just slightly above average for her going into the debate. By contrast, Ramaswamy had the highest expectations of any debater going into Wednesday night. At the other end of the spectrum, former Arkansas Gov. Asa Hutchinson both had the lowest expectations going into the debate and got the lowest grade for his actual performance.

Who won and lost the debate?

Share of likely Republican primary voters who watched the debate who said each candidate performed the best and worst in the debate

We also asked debate watchers who they thought performed best and worst on Wednesday night. The results were similar, with 29 percent saying that DeSantis did the best and 26 percent saying Ramaswamy did. Despite Haley’s high performance score, though, not as many people thought she was the strongest performer — just 15 percent. (All numbers in this article exclude respondents who skipped the question, which is why our numbers sometimes differ from those on Ipsos’s website.)

Interestingly, while 14 percent of debate watchers thought Hutchinson turned in the worst performance, he wasn’t the one with the highest share saying so. That “honor” went to former New Jersey Gov. Chris Christie, whom 22 percent of viewers identified as the worst debater. One possible reason for this could be simply that Christie spoke more than Hutchinson did (over 11 minutes versus seven and a half). Similarly, the candidate who had the most speaking time (former Vice President Mike Pence, who spoke for almost 13 minutes) had a relatively high share of people saying he had the worst performance (13 percent). Ramaswamy’s performance proved somewhat polarizing as well: Despite 26 percent saying he was the strongest debater, another 11 percent said he was the worst.

Who gained (and lost) support

Share of likely Republican primary voters who watched the debate who are considering voting for each candidate after the debate compared with before it

Before debateAfter debate

Respondents could pick multiple candidates.

But did those good and bad performances actually sway any voters? We also asked debate watchers after the debate which candidates they were considering voting for and compared that to their answers before the debate. Haley saw the biggest change in her numbers — 30 percent of debate watchers were considering her before the debate, and 47 percent are considering her after it. North Dakota Gov. Doug Burgum (+8 percentage points), Ramaswamy (+5 points) and DeSantis (+4 points) saw more modest increases. Interestingly, only one candidate saw a meaningful decrease in the number of debate watchers considering voting for him: former President Donald Trump, who chose not to attend the debate. This decrease came despite the fact that most debaters chose not to attack Trump in his absence, opting instead to criticize one another.

The popularity contest

Candidates' favorable and unfavorable ratings among likely Republican primary voters who watched the debate

Unfavorable
Favorable
Before debate
No opinion/Never heard of
After debate

The debate also saw many debate watchers form new opinions of the candidates — some for the better, some for the worse. For example, Haley saw a 14-point increase in her favorable rating with virtually no change to her unfavorable rating, while DeSantis increased his net favorability rating from +41 points to +48 points. Ramaswamy and Hutchinson also saw their favorable ratings rise by double digits after the debate — but their unfavorable ratings rose even more, so they are now less popular on net after the debate than they were before it. Burgum also greatly raised his profile with the debate, though it ended up being a wash: His net favorability rating after the debate (+4 points) is about the same as it was before the debate (+2 points).

Which issues matter most?

Share of likely Republican primary voters who watched the debate who said before the debate that each issue was among the most important to determining their primary vote

The top {{ top_n }} issues are shown. Other issues are {{ other_issues }}. Respondents could select up to three issues from a list of 16, with additional options for “something else” and “don’t know.”

Finally, before the debate, we asked likely Republican primary voters what issues were most important in determining their primary vote. (Respondents were allowed to select up to three issues from a list of 16.) The most common response among debate watchers was, appropriately, the one that came up first in the debate: getting inflation or costs under control. Controlling immigration came in second place with 44 percent. Ability to beat President Biden, fighting liberalism and the woke agenda and cutting government spending were all bunched up together between 27 and 29 percent. Interestingly, improving election security and limiting abortion — which elicited some of the biggest disagreements between the candidates on Wednesday night — were among the least important issues, with only 10 percent and 6 percent of Republicans, respectively, choosing them as one of their top priorities.

All the data presented here comes from polling done by Ipsos for FiveThirtyEight and The Washington Post using Ipsos’s KnowledgePanel, a probability-based online panel that is recruited to be representative of the U.S. population. The same group of respondents was interviewed before and after the Republican presidential debate on Aug. 23, 2023, to track whether and how their answers changed. Numbers on this page exclude respondents who skipped each question. The first wave of the poll was conducted from Aug. 15 through Aug. 22 among a general population sample of adults, with 4,968 respondents who said they were likely to vote in their state’s Republican primary or caucus. For the likely Republican primary voter subset of respondents, the first wave of the poll has a margin of error of ±1.6 percentage points.

The second wave of the poll was conducted late on the night of Aug. 23 and early in the morning on Aug. 24 among 2,219 of the likely Republican primary voters who had previously responded to the first wave. Of those respondents, 775 watched all or part of the debate. The subset of debate watchers carries a margin of error of ±4.0 points.

Click here for a full methodology.

Editing by Maya Sweedler and Amelia Thomson-DeVeaux. Copy editing by Cooper Burton. Visual editing by Christopher Groskopf. Additional contributions from Mary Radcliffe. Art by Katrina Stapleton.