Democrats’ victory over Republicans in the midterm elections Nov. 3 will create a check on President Donald Trump’s actions impacting the auto industry, including tariffs, trade and electric vehicle policy.

A predicted Democratic “blue wave” exceeded expectations, with the party flipping Senate seats in Maine, Iowa, Kansas, Ohio, North Carolina, South Carolina and Texas, some of which have been Republican-held for decades. Democrats will also hold a House majority, though the exact number of seats has yet to be determined. Alaska and Mississippi, the latter an unexpected battleground, will also help determine the size of the Senate majority as votes are still being counted.

While Trump’s veto will stymie active legislating, Democrats will be able to push back a bit on the president’s auto industry related agenda, which has included rolling back emissions and fuel economy standards, eliminating federal support for the EV transition, imposing new tariffs on vehicles and auto parts, and declining to extend a key North American trade agreement.

“The Congress is now at the grown-up table,” said Mike Murphy, founder of EVs for All America. “Trump is going to lose the power of the federal checkbook.”

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Disruption and political pressure

Analysts told Automotive News that even with Democratic control of both chambers, major progressive legislative changes are unlikely.

While Democrats may be interested in reinstating fines under the Corporate Average Fuel Economy Standard or reestablishing the $7,500 tax credit for new electric vehicles, lawmakers will still face Trump’s veto.

Still, a reinstatement of the tax credit, which was eliminated by the One Big Beautiful Bill Act last summer, is not out of the question, especially amid high inflation and expensive gasoline, factors that drove the rout of the Republican Party. The Iran War has driven up gasoline prices and prompted additional interest in alternative powertrains. Plus, some stalwart opponents to the credit, such as Republican Sen. Roger Marshall from Kansas, were voted out of Congress during the midterms.

Republican lawmakers “that were fiscally conservative [in 2025] won’t be there to exert that influence,” said Marcos Carias, North America economist at Coface. “It will basically be down to a compromise between congressional Democrats and President Trump. I wouldn’t bet on it happening but could be a story that comes in.”

The seismic Democratic victory was a setback for one auto industry leader: Elon Musk, Tesla’s CEO, who spent at least $212 million on the campaign for Ken Paxton, the losing Republican Senate candidate in conservative stronghold Texas.

Investigations and appointments

The most meaningful obstacles to Trump’s agenda will be Democrats blocking administration nominees to Cabinet secretary and undersecretary positions.

During the second term of many presidential administrations, officials begin to leave and the White House will try to replace them.

“It becomes harder to get Senate confirmations when you’re dealing with the opposition party,” said John Miller, energy transition sustainability policy analyst at TD Cowen’s Washington Research Group.

That means Congress will have influence over administrators, general counsel, inspectors general and more at the Environmental Protection Agency, as well as the NHTSA administrator.

Congress will also be able to block Trump’s budget plans, and the chambers will be able to investigate how the president is spending money.

Now that the midterms are over, Trump may feel he has even more license to impose tariffs via executive order. Those orders have seen court challenges, and now Congress will be able to contest tariff impositions.

Trump has been a “little bit constrained in that area because the midterms were coming,” Carias said. Now, “he can probably go back to being more active there.”

But now Congress will be able to compel testimony and hold hearings on tariffs and trade, among other issues.

“It’s performative,” said Murphy. “It doesn’t change the laws, but they can haul people up and drive media stories” ahead of the 2028 presidential election.

Republicans will be under intense pressure to raise the debt ceiling during the lame duck session of Congress. If they don’t, Democrats will be able to hold debt ceiling negotiations hostage for all kinds of concessions. Most likely, they will prioritize hot-button issues such as health care and immigration, but tariffs may also end up toward the top of that list.

“Democrats are going to have more power in every way, more leverage in every way,” Murphy said.

Midterm impacts at the state level

After a dramatic campaign in Michigan, Democrat Abdul El-Sayed won a seat in the U.S. Senate over Republican Mike Rogers with more than 52 percent of the vote.

“That’s just another voice that’s advocating for less tariffs on Canada, closer relations on Canada,” said Tom Healy, senior counsel at Honigman. He’s going to be “looking to repair those relationships and and maybe go back to what the status quo was.”

Victories by Democrats in energy-producing states may also counterintuitively moderate the party’s position on the green energy transition.

“Is a Democratic senator from Iowa or Kansas or Texas going to be all about in 2029 an extremely aggressive greenhouse gas tailpipe standard from the EPA? Probably not,” said Miller.

The auto industry will see the full impacts of a Democratically controlled Congress only if the nation chooses a Democrat for president in the 2028 cycle.

In that case, it’s almost certain that EPA and CAFE standards, EV tax credits, compliance fines, the United States-Mexico-Canada Agreement and other government policies will return with full support from the White House and the Capitol.

“If the Democrats win the presidency and take over the agencies, then it’s a whole new world,” said Murphy.