New York City Mayor Zohran Mamdani asked eight million residents to turn their air conditioners up to 78 degrees during a blistering heatwave, and prominent Republicans wasted no time telling him exactly what they thought of the idea.
Mamdani posted the guidance on X on Wednesday, ahead of a multi-day stretch of extreme temperatures expected to last through the Fourth of July weekend. The mayor framed the request as a matter of grid stability and public safety, but the response from the right was swift, sharp, and unified: this is what happens when progressives run your city.
Vivek Ramaswamy, the Republican candidate for governor in Ohio, offered the clearest counter-argument:
"This is what socialism looks like, folks. The right answer isn't restrictions or mandates. It's drilling, fracking, coal, & nuclear. That's how we'll roll in Ohio."
Former presidential candidate Nikki Haley kept it shorter: "Welcome to socialism." Senator Ted Cruz of Texas posted, "In a first-world country, you could turn on the A/C." And Barstool Sports founder Dave Portnoy, who has said he is considering a run against Mamdani for mayor, wrote, "78 degrees??? Welcome to communism people! Hope you enjoy!"
The mayor's full post laid out the city's position plainly. He acknowledged the heat and the strain on the power grid, then asked residents to set thermostats to 78 degrees, turn off lights and electronics not in use, and unplug what they could.
He also said city facilities would follow the same guidance, maintaining the 78-degree rule in municipal buildings, dimming or turning off lights during peak electricity demand, asking private partners to do the same, and powering down non-essential equipment.
"A stable grid means the AC stays on, and lives are saved. Let's ease demand, and get through the heat, together."
The request was voluntary. Nothing in the mayor's post or in the reporting suggests enforcement or penalties. But the optics of a progressive mayor telling New Yorkers how to set their own thermostats proved irresistible to critics.
The heatwave itself is no joke. Temperatures in New York City were expected to reach 100 degrees, the hottest the city has seen since 2012. The New York Post reported that the extreme conditions prompted broad public backlash against the 78-degree recommendation, with critics from across the political spectrum calling it tone-deaf or authoritarian.
The city went further than thermostat guidance. The Washington Examiner reported that Mamdani activated the city's Heat Emergency Plan, suspended eviction enforcement for two days, opened cooling centers across all five boroughs, deployed outreach teams, and extended public pool hours. The heat index in the city could reach as high as 105 degrees. The Examiner noted that roughly 500 New Yorkers die prematurely each summer from hot weather, with an average of seven dying directly from heat.
So the underlying concern, grid strain during dangerous heat, is legitimate. The question Republicans raised is different: Why is the grid so fragile in the first place?
Cruz's post drew particular attention, and not just from the left. A community note was added to his post on X pointing out that Texas has also asked residents to set their air conditioners to 78 degrees in the past. The note referenced a Texas Tribune article from 2015 and an ERCOT news release, though neither was quoted directly in the reporting.
That detail matters. Texas has its own well-documented history of grid stress, particularly during extreme weather events. Cruz's framing, that a "first-world country" would simply let people run their AC, sits awkwardly alongside the fact that his own state's grid operator has issued similar conservation requests.
None of that excuses Mamdani or the broader policy environment that leaves New York's power infrastructure stretched thin during predictable summer heat. But it does complicate the cleanest version of the Republican critique.
Ramaswamy's response pointed toward the real issue. If the grid cannot handle a hot week in July without the mayor of the largest city in America begging residents to sweat a little more, something has gone wrong upstream. The question is not whether 78 degrees is a reasonable indoor temperature, the U.S. Department of Energy itself recommends starting AC between 75 and 78 degrees in summer. The question is why a city of New York's size and wealth finds itself in a position where voluntary conservation appeals are necessary to keep the lights on.
That is not a weather problem. It is an infrastructure and energy-policy problem. And it is a problem that progressive governance has had decades to address in New York.
The New York Post noted that former Mayor Eric Adams gave the same 78-degree advice during a July 2023 heat advisory. So this is not new guidance, and it is not unique to Mamdani. The pattern repeats because the underlying conditions have not changed. The grid remains vulnerable. The city's energy mix remains constrained. And every summer, the same request goes out: please use less so the system doesn't buckle.
Mamdani's defenders will note, correctly, that the 78-degree request was voluntary, that it aligns with federal guidance, and that protecting grid stability during extreme heat is a reasonable public-safety measure. All fair points.
But the Republican response tapped into something real: a growing frustration with leaders who manage scarcity instead of building abundance. When the answer to a hot day in America's biggest city is "turn your AC up and unplug your appliances," voters are entitled to ask whether their leaders have spent the last several years investing in reliable energy capacity, or in other priorities entirely.
Portnoy, who has floated a mayoral challenge to Mamdani, clearly sees an opening. Whether his interest in running is serious or performative remains unclear, he has said only that he was "thinking of" it. But the fact that a sports-media entrepreneur can generate traction by mocking the mayor's thermostat advice tells you something about the political temperature in New York, which is running well above 78 degrees.
Every summer, the same cycle plays out. Heat arrives. The grid groans. Officials ask residents to sacrifice comfort. Critics pounce. And nothing changes before the next July.
Mamdani inherited a fragile grid, but he also inherited the progressive policy framework that helped make it fragile. New York has aggressively pursued emissions-reduction targets, restricted new natural gas hookups in buildings, and leaned into renewable mandates, all while demand for electricity continues to climb. The tension between those commitments and the physical reality of keeping millions of air conditioners running on a 100-degree day is not theoretical. It showed up on the mayor's X feed this week.
Ramaswamy's counter-prescription, drilling, fracking, coal, and nuclear, may not be a perfect fit for every jurisdiction. But it reflects a basic principle that resonates with voters outside the progressive bubble: build more capacity, generate more power, and stop asking citizens to ration their way through summer.
The heatwave is expected to continue through the holiday weekend. The city's cooling centers are open. Evictions are paused. Pool hours are extended. And New Yorkers have been asked, politely, to be a little warmer than they'd like.
Whether the grid holds through the weekend will determine whether this episode fades into the usual summer noise or becomes a larger political liability for Mamdani. If the lights stay on, the mayor will claim vindication. If they don't, the Republican critiques will look less like social-media dunking and more like prophecy.
Either way, the underlying question remains unanswered: When does New York stop asking its residents to manage around a grid that can't keep up, and start building one that can?
A city that has to beg eight million people to sweat through the Fourth of July isn't suffering from a thermostat problem. It's suffering from a leadership problem, one that no amount of voluntary conservation will fix.
