After climbing into a Tesla Model S last week, President Trump pledged to buy one. The next day, the Fox News host Sean Hannity said he had bought a Model S Plaid to support the embattled company, saying a Tesla “has more American parts in it than any other car made in our country.”

In a backlash to the backlash against the tactics of Elon Musk’s Department of Government Efficiency, prominent conservatives are rallying to the side of the electric car company led by Mr. Musk. They are hoping to swing enough like-minded consumers to offset a boycott of the electric automaker by liberals and Democrats or anyone offended by Mr. Musk’s actions.

But how effective can such a rescue mission be? Analysts say it can help but only to an extent.

So many Democratic buyers appear to be fleeing Tesla that even Mr. Trump’s best sales pitch is unlikely to woo enough new customers to fill the vacuum, auto experts said. Analysts at JPMorgan predict Tesla will deliver its fewest cars in the first quarter than it had in three years.

“When you make your product unattractive to half the market, I promise you, you won’t increase your sales,” said Alexander Edwards, president of Strategic Vision, an automotive research and consulting firm.

Mr. Edwards has been surveying car buyers for decades. Since 2016, the surveys have found that electric-car owners were up to four times as likely to identify as Democrats or liberals as to identify as Republican or conservative. Among Tesla owners, the spread was consistently two to one.

The gap narrowed sharply through 2024. This year, as sales have fallen, slightly more Tesla buyers identify as Republicans than Democrats, at 30 percent versus 29 percent.

“Democrats are fleeing the brand and saying they won’t consider it in the future, so there is naturally a greater proportion of Republican and independent buyers,” Mr. Edwards said.

He said Democrats first started losing interest in Tesla when Mr. Musk bought Twitter, now X, in 2022. Then, last July, when Mr. Musk publicly backed Mr. Trump, the share of Democrats who said they would “definitely consider” a Tesla fell by half.

Overall, about 8 percent of car owners would now definitely consider a Tesla, according to Mr. Edwards’s surveys. That compares with 22 percent five years ago, when Tesla often topped rankings of luxury brands that buyers would consider.

Tesla’s slipping sales, he said, “are mostly, if not completely, attributed to the statements and behavior of Elon Musk.”

The automaker did not respond to a request for comment.

Tesla remains America’s best-selling electric vehicle brand by far with about 44 percent of the market, despite a 5.6 percent drop in U.S. sales, to about 634,000 cars in 2024, according to Kelley Blue Book. Many drivers are determined to stick with the electric vehicle pioneer, whose cars can travel several hundred miles on a charge and can be easily refueled at the company’s extensive charging network.

Josh Anders, 44, traded a gasoline-powered sport utility vehicle for a Tesla Model 3 in 2019. A resident of Fort Wayne, Ind., he was blown away by the car’s energy efficiency, technology and limited maintenance needs. He soon traded for another, and is about to take delivery of the latest Model Y S.U.V.

“Owning a Tesla was one of the best decisions I ever made, and I’m sticking by it,” Mr. Anders said. “I would love a Rivian R1S, but I can’t afford it. I’m a tech guy, and I love all the features and innovations.”

Mr. Anders, a father of four and creative director of a Christian nonprofit music and arts organization, said he leans conservative, and is uncomfortable with boycotts.

“Elon’s not perfect, and Tesla’s not perfect, but it’s a community of dreamers and doers. I appreciate a brand that’s constantly pushing the boundaries,” he said. “I don’t need every company to share my beliefs. I just need them to share a commitment to progress.”

Still, cars have a long history of becoming part of the political fray.

The Chevrolet Volt, a plug-in hybrid introduced in 2011 after General Motors received federal government assistance, was derided by some conservatives as the “Obamacar.” The fuel-sipping Toyota Prius and the gas-guzzling Hummer from G.M. were often lauded and attacked by people on opposite ends of the political spectrum.

Isaac Seliger, a business owner and grant writer in Scottsdale, Ariz., said he’d had little interest in electric vehicles even though his son, who died recently, was a devoted fan of Tesla.

Now, said Mr. Seliger, who described himself as politically independent, he is determined to buy a Tesla, because he wants to defy groupthink and polarization. A friend told him that she would stop speaking to him if he did.

“As a former lefty and antiwar guy, this all makes me want to buy a Tesla more,” Mr. Seliger, 73, said. “I’ll absolutely be making a political statement. But if I bought a Porsche Macan, that’s a statement, too, where people pigeonhole you as an obnoxious older Porsche driver.”

Mr. Seliger added that he found criticisms of Mr. Musk overblown.

“So Elon was a hero of the left, and now he’s a Nazi? That’s just crazy,” he said. “He strikes me as a smart guy who makes great stuff.”

To many people who have faith in Tesla and Mr. Musk, the company’s sales and stock price, which is down about 48 percent from a December high, will eventually recover. The stock was up 12 percent over the last four days of trading.

But some automotive experts say Tesla may struggle because the company has not regularly updated its cars or introduced new models. In addition, the company’s chargers, which once could be used only by Teslas, are opening access to nearly every major competitor, said Loren McDonald, chief analyst at Paren, an electric vehicle charging data firm. And other automakers are offering new electric models, often with notably affordable monthly payments.

“He’s rapidly losing the advantages in range, tech, value and convenience that drove people to Tesla,” Mr. McDonald said. “For a lot of people, it’s time to move on and try something new.”

Of course, most buyers don’t choose cars based on politics. But a brand’s image matters. Tesla sales slipped even as overall U.S. electric vehicle sales grew 7.3 percent in 2024, to 1.3 million. Mr. Edwards said Mr. Musk was making it too easy for people to shop elsewhere.

“People can love their Hyundai, G.M., Rivian or BMW just as much,” he said.

Republicans certainly buy electric cars, but fewer of them have made the plunge to fully electric models. Rural states, where Republicans outnumber Democrats, have fewer chargers than more urban states. Strategic Vision data shows Republicans are more likely to work outside the home, and are less willing to put up with inconveniences like long charging stops. And a 2024 Pew Research Center survey found that more Republicans than Democrats say electric vehicles cost too much and are less reliable than gasoline cars.

In the New York metropolitan area, the nation’s largest car market, new Tesla registrations fell 13 percent, to 47,000 cars, in 2024, according to S&P Global Mobility. That same year, more than 101,000 people registered a Tesla in Los Angeles, the second-largest market, a drop of 8 percent. Still, nearly one in eight new cars in Los Angeles was a Tesla. In the San Francisco Bay Area, where Tesla was founded, nearly one in five new cars was a Tesla. But sales tumbled 17 percent to 54,000 cars.

Consumers in the Houston area bought 12,000 Teslas. But Bay Area residents bought 4.5 times as many Teslas, in a smaller market for new cars overall. Some areas saw big increases, including Miami-Fort Lauderdale where sales jumped 32 percent, to nearly 23,000 cars, in 2024. Tesla sales also rose sharply in Salt Lake City, Las Vegas and St. Louis. But the company’s gains in these places could not offset steeper declines in larger, more liberal metro areas.

Experts say wealthy conservatives such as Mr. Hannity and Mr. Trump have the disposable income to make a personal automotive statement by opting for a Tesla. But they may not be able to persuade Americans of more modest means.

Mr. McDonald also noted that Mr. Trump and other conservatives had spent years vilifying electric cars, mocking climate change and criticizing former President Joseph R. Biden Jr.’s climate and auto policies.

“The messaging is inconsistent,” Mr. McDonald said. “Is the guy in Arkansas who drives a Ram pickup going to buy a Tesla now? How far can you go against your own beliefs to support Elon Musk?”