Tariffs could cost them. They’re still standing by Trump.

Kathy McConnell vented about inflation last fall as she waited in line to attend one of Donald Trump’s final rallies in Pennsylvania. Grocery store prices were ridiculous, she said, and she hoped Trump would fix things.

Now Trump’s tariffs threaten to raise prices again. The stock market rebounded somewhat this week on the news that Trump would pause many levies for 90 days, but it’s been a wild ride: McConnell watched her invested pension money drop by 8% at one point and wondered if she might have to delay retirement.

She wasn’t upset.

“If this is what it takes to make other countries treat us fair,” the 64-year-old said, “then I am OK with that.”

Trump’s roller coaster tariff policy poses one of the starkest tests yet of his ability to defy political gravity, dividing his allies but also showcasing the remarkable faith of his die-hard base. The politician who campaigned on lowering prices spent the past week asking Americans to accept serious economic pain in the hope of reordering global trade. And many supporters were happy to sacrifice — even before Trump changed course amid financial panic and put many tariffs on hold.

MAGA influencers who once condemned inflation under President Joe Biden told Americans they could make do with less. GOP voters once irate over the cost of groceries said they are willing to give Trump a long runway to figure things out.

The president is still pressing ahead with a 10 percent universal tariff and has raised levies on Chinese imports to 145%. Goldman Sachs economists put the chances of a recession at 45% Wednesday, even after Trump announced he would pause or lower his country-specific tariffs for scores of nations that want to negotiate.

But plenty of Trump allies hailed the president’s shift this week as a clever ploy to bring countries to the table — sometimes touting Trump’s memoir on dealmaking — or said they always expected the tariffs to be temporary, despite the Trump team’s mixed messages.

“This was brilliantly executed. … Textbook, Art of the Deal,” declared Bill Ackman, the pro-Trump hedge fund billionaire who previously called the tariffs a dire mistake.

“I think it’s ‘Art of the Deal’ negotiation on his part, and it’s working,” echoed David Lavine, a Republican donor from Texas who recently wrote to Commerce Secretary Howard Lutnick with his concerns.

The initial 32% tariff Trump announced on Taiwan was a nightmare for Lavine, who owns a manufacturing company there. “We can’t exist with 32,” Lavine said. If it took effect for several months, he might have to stop production.

Yet Lavine doesn’t hold anything against Trump, who temporarily reduced the tariff to 10 percent, and he believes the duties won’t last.

“I think we all have to look at the goal line and the big picture,” he said.

Trump has championed tariffs throughout his political career as a tool to revive American manufacturing, and he made no secret of his plans during the 2024 campaign. He called for a 10 percent baseline tariff on almost all imports, threatened far higher rates in other circumstances and declared “tariff” to be “the most beautiful word in the dictionary.”

Some supporters were skeptical Trump would go through with the most disruptive proposals, however. Advisers helped scuttle many of Trump’s ideas during his first term.

When Trump announced planned tariffs on the United States’ three largest trading partners in November, just after his election, GOP donor and metals magnate Andy Sabin told The Post he doubted Trump would follow through.

“I personally don’t believe he’s going to do all that,” Sabin said. “And I think most people think he’s just shooting off his mouth … He’s going to be good for business, but he’s not going to be extreme.”

Sabin was aghast this month when Trump announced stiff tariffs on almost every country. He views the whole episode as a mistake, not a feat of negotiation: “I think Trump blinked,” he said after Trump announced his 90-day pause. “I think he saw the carnage … [and] decided to do what everybody in the country has been telling him.”

Other Trump supporters are unfazed by the chaos.

“It’s going to go up and down,” said Rachel Higgins, a retiree from Pennsylvania. “The slightest thing makes the stock market drop.”

Higgins didn’t hesitate last fall when asked why she was voting for Trump: “The economy,” she said, adding later that “in the end my pocketbook matters.” Her savings took a hit when the stock market dropped this past week, but she’s confident the market will recover by the time she needs to withdraw.

Plus, she has family members who work in manufacturing, and she supports Trump’s goal to bring jobs back to the U.S.

“It’s not just about my money,” she said. “It’s about the country.”

Many economists were skeptical that Trump’s tariffs would achieve his stated long-term goal of bringing manufacturing back to the U.S. They said that uncertainty around Trump’s plans could hobble investment and predicted that some companies would wait things out.

The tariff fallout also sparked unusual opposition from staunch Trump allies: Elon Musk, the billionaire Trump donor now leading the U.S. DOGE Service’s charge to shrink the government, argued against the tariffs and at one point declared one of the president’s economic advisers a “moron.”

Trump’s team argued that the tariffs were necessary to start addressing the United States’ long-running trade deficit with other countries, even if that brought some hardship.

“This adjustment may be challenging at times,” Jamieson Greer, the U.S. trade representative, told lawmakers during a hearing this week. “And in a moment of drastic, overdue change, I’m confident — I’m certain — that the American people can rise to the challenge as they’ve done before.”

Ken Abramowitz, the pro-Trump co-founder of the venture capital firm NGN Capital, was listening Monday as the president defended his tariffs at a news conference and said other countries were flocking to negotiate. “Tariffs will make this country very rich,” Trump said.

Abramowitz, 74, wasn’t thrilled about the stock market dive: “I don’t enjoy losing 10 percent more than anyone else,” he said.

Still, he believed in Trump’s vision. “There’s actually two America Firsts,” he said, referencing one of Trump’s slogans. “There’s an America First Short-Term and an America First Long-Term.”

“Trump is behaving in favor of America First Long-Term,” he said.