Compare that to second-choice polls of Christie's supporters, which suffer from the same problem of small sample size but likewise paint a consistent picture. In every poll we collected, a plurality or majority of Christie supporters said they would support former U.N. Ambassador Nikki Haley if Christie were not in the race. Very few said they would support Trump, Ramaswamy or DeSantis.

Christie supporters have a clear second choice: Haley

Polls conducted since Nov. 5, 2023, of former New Jersey Gov. Chris Christie's supporters' second choices in the 2024 Republican presidential primary

National
Pollster Dates Sample DeSantis Haley Ramaswamy Trump
YouGov/Georgetown/ University of Pennsylvania Nov. 17-27 10 LV 10% 40% 10% 0%
NewsNation/Decision Desk HQ Nov. 26-27 32 RV 9 47 9 16
Clarity Campaign Labs Dec. 7-10 9 LV 22 33 0 0
Suffolk/USA Today Dec. 26-29 14 LV 7 79 0 7
Average 12 50 5 6
Iowa
Pollster Dates Sample DeSantis Haley Ramaswamy Trump
Civiqs/Iowa State University Dec. 8-13 16 LV 2% 47% 2% 7%
Emerson College Dec. 15-17 19 LV 9 26 0 14
Average 6 37 1 11
New Hampshire
Pollster Dates Sample DeSantis Haley Ramaswamy Trump
Emerson/WHDH-TV Nov. 10-13 41 LV 9% 44% 3% 0%
University of New Hampshire/CNN Nov. 10-14 131 LV 1 52 1 11
Average 5 48 2 6

\"LV\" stands for \"likely voters\"; \"RV\" stands for \"registered voters.\" If a pollster conducted multiple second-choice polls in the past two months, we looked at only the most recent one.

Source: Polls

The reason for this isn't hard to figure out: Christie has made his entire campaign about the dangers of reelecting Trump. Trump and the two candidates who most closely echo his style and rhetoric are unlikely to appeal to the sort of Republicans drawn to that message. Instead, they favor the other top candidate in the race who has criticized Trumpism*** and who hails from the old guard of the Republican Party. As 538 wrote the other day, this is a frustration for Haley in New Hampshire in particular, where she is \"just\" 13 percentage points behind Trump in the polls. If Christie dropped out and half of his 11 percent support in New Hampshire went to Haley, as suggested by these numbers, it would significantly cut into her deficit. (No, it wouldn't be enough to erase Trump's lead, but if Haley continues to rise in New Hampshire — say, if she gets a boost after a strong performance in Iowa — it could be decisive.)

Meanwhile, DeSantis seems to have one foot in each lane. Nationally, most of his supporters said their second choice was Trump, but a significant minority in each poll said it was Haley. But in polls of Iowa, it's the reverse: A plurality of DeSantis's supporters said that Haley was their second choice, while a big chunk still said Trump was.

Trump and Haley are DeSantis voters’ top second choices

Polls conducted since Nov. 5, 2023, of Florida Gov. Ron DeSantis’s supporters’ second choices in the 2024 Republican presidential primary

National
Pollster Dates Sample Christie Haley Ramaswamy Trump
Hart/POS/NBC News Nov. 10-14 58 LV 9% 20% 14% 48%
YouGov/Georgetown/University of Pennsylvania Nov. 17-27 56 LV 7 30 11 39
NewsNation/Decision Desk HQ Nov. 26-27 98 RV 5 28 11 43
Clarity Campaign Labs Dec. 7-10 44 LV 2 30 14 48
Suffolk/USA Today Dec. 26-29 33 LV 3 18 9 67
YouGov/The Economist Dec. 24-26, Dec. 31-Jan. 2 144 RV 4 34 9 42
Average 5 27 11 48
Iowa
Pollster Dates Sample Christie Haley Ramaswamy Trump
Civiqs/Iowa State University Dec. 8-13 75 LV 4% 45% 12% 31%
Emerson College Dec. 15-17 61 LV 6 44 14 27
Beacon/Shaw/Fox Business Dec. 14-18 145 LV 2 39 17 30
Average 4 43 14 29
New Hampshire
Pollster Dates Sample Christie Haley Ramaswamy Trump
Emerson/WHDH-TV Nov. 10-13 33 LV 0% 40% 20% 18%
University of New Hampshire/CNN Nov. 10-14 84 LV 2 24 13 51
Average 1 32 17 35

“LV” stands for “likely voters”; “RV” stands for “registered voters.” If a pollster conducted multiple second-choice polls in the past two months, we looked at only the most recent one, except in the case of YouGov/The Economist, which aggregated its two most recent surveys together for us.

Source: Polls

This is probably simply because different voters have different reasons for supporting DeSantis. Some might like the strongly conservative stance he has taken on social issues as governor of Florida; in DeSantis's absence, those voters might default to his fellow culture warrior Trump. But some DeSantis supporters are undoubtedly supporting him because they want to move on from Trump, and it makes sense that their second choice is Haley.

Frustratingly, it's not clear who DeSantis supporters in New Hampshire would flock to if DeSantis were to drop out after Iowa. According to the most recent Emerson College/WHDH-TV poll, it would be Haley — but according to a University of New Hampshire/CNN poll taken around the same time, it would be Trump. And both polls are almost two months out at this point, so really we're flying blind.

Considering that she is currently polling better than she ever has, Haley's withdrawal from the race feels further away than Christie's, Ramaswamy's or DeSantis's, but let's take a look at her supporters' second choices as well. Unsurprisingly, their top alternative is either Christie or DeSantis, depending on the poll. Relatively few Haley supporters would switch to Trump.

Haley voters' top alternative is either DeSantis or Christie

Polls conducted since Nov. 5, 2023, of former U.N. Ambassador Nikki Haley's supporters' second choices in the 2024 Republican presidential primary

National
Pollster Dates Sample Christie DeSantis Ramaswamy Trump
YouGov/Georgetown/University of Pennsylvania Nov. 17-27 41 LV 22% 29% 2% 10%
NewsNation/Decision Desk HQ Nov. 26-27 93 RV 14 36 11 15
Clarity Campaign Labs Dec. 7-10 27 LV 15 41 11 15
Suffolk/USA Today Dec. 26-29 41 LV 41 32 0 17
YouGov/The Economist Dec. 24-26, Dec. 31-Jan. 2 90 RV 11 50 6 25
Average 21 38 6 16
Iowa
Pollster Dates Sample Christie DeSantis Ramaswamy Trump
Civiqs/Iowa State University Dec. 8-13 66 LV 35% 36% 1% 15%
Emerson College Dec. 15-17 73 LV 18 46 17 8
Beacon/Shaw/Fox Business Dec. 14-18 129 LV 21 43 6 10
Average 25 42 8 11
New Hampshire
Pollster Dates Sample Christie DeSantis Ramaswamy Trump
Emerson/WHDH-TV Nov. 10-13 82 LV 42% 24% 5% 12%
University of New Hampshire/CNN Nov. 10-14 194 LV 27 16 2 8
Average 35 20 4 10

\"LV\" stands for \"likely voters\"; \"RV\" stands for \"registered voters.\" If a pollster conducted multiple second-choice polls in the past two months, we looked at only the most recent one, except in the case of YouGov/The Economist, which aggregated its two most recent surveys together for us.

Source: Polls

Finally, let's entertain the very unlikely scenario in which Trump drops out. Obviously, it would throw the primary into chaos to have more than half of voters suddenly up for grabs, but the candidate best positioned to benefit seems like it would be DeSantis. On average, 43 percent of Trump supporters nationally identified him as their second choice.

Trump supporters like DeSantis and Ramaswamy

Polls conducted since Nov. 5, 2023, of former President Donald Trump's supporters' second choices in the 2024 Republican presidential primary

National
Pollster Dates Sample Christie DeSantis Haley Ramaswamy
Hart/POS/NBC News Nov. 10-14 183 LV 2% 49% 16% 16%
YouGov/Georgetown/University of Pennsylvania Nov. 17-27 297 LV 1 40 12 16
NewsNation/Decision Desk HQ Nov. 26-27 432 RV 1 46 12 19
Clarity Campaign Labs Dec. 7-10 333 LV 2 40 12 23
Beacon/Shaw/Fox News Dec. 10-13 278 LV 8 50 14 20
Suffolk/USA Today Dec. 26-29 202 LV 3 38 15 20
YouGov/The Economist Dec. 24-26, Dec. 31-Jan. 2 670 RV 1 43 15 20
Morning Consult Dec. 30-Jan. 1 LV 40 12 24
Average 3 43 14 20
Iowa
Pollster Dates Sample Christie DeSantis Haley Ramaswamy
Civiqs/Iowa State University Dec. 8-13 238 LV 0% 27% 15% 27%
Emerson College Dec. 15-17 209 LV 4 25 15 32
Beacon/Shaw/Fox Business Dec. 14-18 420 LV 1 30 11 30
Average 2 27 14 30
New Hampshire
Pollster Dates Sample Christie DeSantis Haley Ramaswamy
Emerson/WHDH-TV Nov. 10-13 226 LV 1% 27% 16% 23%
Monmouth/The Washington Post Nov. 9-14 249 LV 0 31 17 21
University of New Hampshire/CNN Nov. 10-14 398 LV 1 28 9 30
Average 1 29 14 25

\"LV\" stands for \"likely voters\"; \"RV\" stands for \"registered voters.\" If a pollster conducted multiple second-choice polls in the past two months, we looked at only the most recent one, except in the case of YouGov/The Economist, which aggregated its two most recent surveys together for us.

Source: Polls

That said, in Iowa and New Hampshire, Trump's supporters would split roughly evenly between DeSantis and Ramaswamy, raising the possibility that Ramaswamy could score an early-state win that might propel his campaign forward nationally. And a not-insignificant share of Trump supporters opt for Haley as their second choice, so she wouldn't be doomed in this scenario either.

All that said, take these numbers with a grain of salt. Second-choice polling often isn't as helpful as we want it to be: Voters' second choices are subject to a lot of change over the course of a campaign — even more than their first choices — and can be swayed by things like the candidate endorsing someone else on their way out of the race. And again, for all the candidates above except Trump, the sample sizes on these crosstabs are so small that they have very wide margins of error.

I recommend taking generalities away from this article (\"Ramaswamy's voters will mostly flow to Trump\") rather than specifics (\"43 percent of DeSantis's voters in Iowa would go to Haley if he drops out\"). But those generalities can still be useful for predicting where the primary will go next if a candidate drops out — and over the next couple months, that will probably happen multiple times.

Cooper Burton contributed research.

Footnotes

*All numbers in this article are as of 10 a.m. Eastern.

**If a pollster conducted multiple second-choice polls in the past two months, we looked at only the most recent one, except in the case of YouGov/The Economist, which was kind enough to aggregate its two most recent surveys together in order to give us a larger sample size. We used only second-choice polls that released or shared with us full crosstabs by first-choice candidate.

***DeSantis has criticized Trump personally but hasn't really objected to the populist direction he has taken the Republican Party. And while former Arkansas Gov. Asa Hutchinson has criticized Trumpism, he has been a nonfactor in the race.

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