In January, I had a post about why Trump was renominated in 2024. I argued that it wasn't because he of strong support among ordinary Republicans, but because of support from Republican elites. Andrew Gelman recently discussed my post in his blog, which led me to some further thoughts. My post concluded by saying "'the base' didn't impose Trump on Republican elites; Republican elites asked for him." In retrospect, saying that they "asked for him" was going too far--it would be more accurate to say that they didn't put up much opposition even though Trump had shown that he was a drag on the party. He underperformed in both 2016 and 2020, and he hurt Republican chances in Congress by promoting weak candidates like Herschel Walker and Dr. Oz. So even if they liked some of Trump's policies, they had a good reason to turn to a new candidate in 2024.
Why didn't Trump encounter significant resistance from Republican elites? One possibility is that they they realized had so much support from ordinary Republican voters that resistance would be futile (and would expose them to retaliation). In my earlier post, I looked at questions about whether people would like Trump to run for the 2024 nomination and compared them to earlier questions on whether they wanted Gore, Kerry, and Romney to run for re-nomination after their defeats. Those questions are usually asked in the first couple of years after the election; once it gets closer to the next election, you get questions about who people would choose out of the declared or potential candidates. The figure shows the percentages of Republicans favoring Trump and DeSantis in surveys between July 2022 and August 2023.
Trump was ahead in the first few surveys, but his support declined and DeSantis's rose until sometime in early 2023. After that, Trump steadily gained, but he didn't consistently break 50% until late May 2023. In the last few surveys, the average was 54% for Trump, 17% for DeSantis, and 29% for all others.
So there was a period when Trump seemed vulnerable and other candidates were starting their campaigns (Trump declared in November 2022, Haley in February 2023, and others in March-June 2023). During this time, endorsements might have been helpful in getting opposition campaigns off the ground. But only a few prominent Republicans offered them: among Republican Senators and Governors, by the middle of May ten had endorsed Trump and no one had endorsed any of his opponents. There were six for various opponents by the end of June, then one for Trump in July and one more in August. After that Trump pulled ahead steadily. That is, very few prominent Republicans endorsed other candidates when their endorsements might have made a difference. To consider a few examples, Susan Collins and Lisa Murkowski both endorsed Nikki Haley, but not until early March 2024, when it was too late to matter. A few days ago, the New York Times had a story on a new memoir by Lamar Alexander (who left the Senate in January 2021) in which he "says President Trump committed an impeachable offense on Jan. 6." But Ballotpedia doesn't record an endorsement from Alexander in the 2024 campaign. Mitch Daniels didn't offer one either.
Why did prominent Republicans who didn't support Trump and had no particular reason to fear him stay on the sidelines? As I've mentioned before, the rise of partisanship means that the perception of party unity has a larger impact on the fortunes of the party--when a party is seen as divided, it does worse. If a large number of prominent Republicans had come out against Trump, that might have stopped him from getting the nomination, but it would also have hurt Republican chances in 2024 (especially since Trump would not have been a gracious loser). As an alternative, they hoped that he would fade away on his own, and by the time it became clear that wouldn't happen, it was too late,
[Data from the Roper Center for Public Opinion Research]
