New York City Mayor Zohran Mamdani used the July Fourth holiday weekend to ask millions of residents baking in a heatwave to crank their thermostats up to 78 degrees, and the response from the right was swift, merciless, and loaded with historical parallels that no Democrat wants to hear.
Mamdani, the city's democratic-socialist mayor, posted on X from the official @NYCMayor account urging New Yorkers to conserve energy while temperatures threatened to reach triple digits. The post read like a public-service announcement. To conservative critics, it read like a confession.
As Just the News reported, the backlash drew comparisons to President Jimmy Carter's infamous 1977 "sweater speech", the televised address in which Carter sat by the White House Library fireplace in a cardigan and asked Americans to lower their thermostats to 65 degrees during the day and 55 at night. Carter later that summer urged Americans to set cooling systems to 78 degrees, the same number Mamdani chose nearly half a century later.
The parallels were not lost on anyone paying attention.
Mamdani's message was straightforward enough on its face. He wrote:
"New York: it's hot out there, and the power grid is working overtime to keep us cool. Set your AC to 78 degrees, turn off lights/electronics you're not using, and unplug what you can."
A follow-up post added:
"A stable grid means the AC stays on, and lives are saved. Let's ease demand, and get through the heat, together."
The mayor also stated that city buildings would follow the same 78-degree rule, and that lights would be dimmed or turned off during peak demand. He asked private partners to power down non-essential equipment, as Breitbart noted in its coverage of the episode.
On its own, asking people to conserve energy during a heatwave is hardly radical. Utilities do it routinely. But coming from Mamdani, a mayor who has already proposed $23 billion in new taxes during his first 100 days and whose fiscal management has drawn persistent scrutiny, the request landed differently.
It landed as a symbol.
Former House Speaker Newt Gingrich was among the first major conservative voices to weigh in. The Georgia Republican posted on X the following day, framing Mamdani's suggestion as an indictment of Democratic governance writ large:
"Telling New Yorkers to set their air conditioning at 78 degrees is an open admission of the failure of the left to provide enough inexpensive electricity that people can be comfortable even in hot weather."
Gingrich also suggested the mayor's idea reflects "the reality of big government socialism's inability to solve problems." The critique was not about conservation as a concept. It was about a city run by progressives for decades that still cannot keep its grid reliable enough to cool its own residents without begging them to suffer quietly.
Sen. Rand Paul of Kentucky went further, calling Mamdani's request "proof that communism is (unfortunately) alive and well." Paul, a 2016 Republican presidential candidate, did not hold back, and he was far from alone. Just the News reported that at least six former or potential Republican presidential candidates responded to Mamdani's post.
Rep. Marjorie Taylor Greene offered what may have been the sharpest framing of the energy argument:
"This is the worst campaign ad for the Democrats. Set your air to 78 degrees? Bless your hearts New York City!! American energy should be so strong and plentiful that you never have to set it above 70 if you don't feel like it."
Greene's point, that abundant, affordable energy is a policy choice, not a pipe dream, cuts to the heart of the conservative objection. The United States sits on vast reserves of natural gas, oil, and nuclear capacity. The question is whether political leaders choose to develop those resources or restrict them in the name of climate ideology and then ask voters to sweat through the consequences.
That question has particular bite in New York, a city where the mayor has been pleading with Albany for billions to close a budget gap even as he expands government's reach into everything from grocery stores to energy consumption.
Barstool Sports founder Dave Portnoy, who endorsed Donald Trump in the 2024 presidential race, kept his response blunt:
"78 degrees??? Welcome to communism people! Hope you enjoy."
Josh Holmes, who served as chief of staff to then-Senate Republican Leader Mitch McConnell, drew the historical line explicitly. He posted on X:
"Jimmy Carter's turn down your thermostat and put on a sweater. American dream."
The Carter comparison is more than a punchline. It is a warning. Carter's 1977 energy speech, delivered about two weeks into his presidency as part of an ambitious but faltering effort to fix a struggling economy, became a defining image of a president who asked Americans to lower their expectations rather than expand their possibilities. The Bill of Rights Institute, a conservative- and libertarian-minded organization, has described Carter's decision to lead with energy policy as a "costly mistake."
Ronald Reagan answered Carter's austerity with a simple question in 1980: "Are you better off than you were four years ago?" Voters said no, and Carter became a one-term president.
The Washington Post itself acknowledged the political toxicity of Carter's thermostat moment in an article headlined "Jimmy Carter wore a sweater, and ignited years of Republican backlash."
Mamdani may not be running for president. But he is running a city of more than eight million people, and his thermostat advice arrived during a heatwave that the New York Post reported threatened to push temperatures to 100 degrees, the hottest the city has seen since 2012. That is not a moment for symbolism. It is a moment for functioning infrastructure.
Ordinary New Yorkers were not shy about their feelings. One resident replied directly to Mamdani's post: "As a New Yorker I'll be setting my AC to 62 degrees for the foreseeable future as a direct retaliation to your authority."
The defiance was not random. It reflected a growing frustration with a mayor whose policy instincts lean toward government control and whose record on delivering results has been mixed at best. Mamdani has already drawn fire for admitting that his city-owned grocery stores would only guarantee lower prices on a limited basket of goods, a far cry from the sweeping affordability promises that accompanied the program's launch.
Rep. Nancy Mace was also named among the conservative critics who weighed in, though no specific quote from her appeared in the coverage.
It is worth noting that Mamdani's 78-degree recommendation was not, by itself, unprecedented. Former Mayor Eric Adams issued the same guidance during a July 2023 heat advisory, and the Department of Energy recommends a range of 75 to 78 degrees in summer. But Adams was not a self-described democratic socialist, and the Department of Energy does not govern a city that has spent decades restricting its own energy supply while lecturing residents about consumption.
Context matters. And Mamdani's context includes a record of ethical questions, including his acceptance of free World Cup tickets while taxpayers foot the bill for his broader agenda, that makes every "shared sacrifice" request land with a thud.
The conservative backlash to Mamdani's post was not about air conditioning. It was about a governing philosophy that treats scarcity as a virtue and asks citizens to accommodate the failures of their leaders.
Gingrich framed it cleanly: if the grid cannot handle a hot day in July, the answer is more energy, not less comfort. Greene put it in kitchen-table terms: Americans should never have to choose between a livable home and a stable power grid. And the Carter parallel, whether Mamdani invited it or not, carries a political charge that no amount of "we're all in this together" messaging can defuse.
Carter asked Americans to put on sweaters. Mamdani asked them to sweat. Reagan asked them whether they were better off. The voters answered.
Nearly fifty years later, the question hasn't changed. Neither, apparently, has the Democratic answer.