The Democratic Party has secured a historic victory in the United States midterm elections, winning control of both the Senate and the House of Representatives after flipping several traditionally Republican seats across the country.
According to tally reports confirmed by The Associated Press (AP), Democrats secured 53 seats and held leads in three others in the 100-member Senate. Hours after declaring victory in the Senate, the AP reported that Democrats had also crossed the 218-seat threshold required to secure a majority in the 435-member House of Representatives, reports Al Jazeera.
The double victory marks the first time since former President Barack Obama’s second term that an incumbent US president has been left without a majority in either chamber of Congress.
Although several races remain too close to call and final results may take several days to confirm, Democratic leaders have described the outcome as a resounding defeat for US President Donald Trump. Trump has also acknowledged the political setback, conceding that his opponents had outperformed his party’s election campaign.
Democrats break through traditional Republican strongholds
The Democratic surge was driven by significant victories in traditionally conservative states, where the party flipped Senate seats that had remained in Republican hands for decades.
In Texas, a state Trump won by 14 percentage points in 2024, Democrat James Talarico secured a decisive victory over state Attorney General Ken Paxton. Despite Trump’s endorsement, Paxton had faced fraud indictments and a previous impeachment by the state legislature.
Talarico led by more than 11 percentage points with most votes counted, becoming the first Democrat to win a statewide election in Texas in 32 years.
In Kansas, Democrat Adam Hamilton unseated Republican Roger Marshall, another Trump-backed candidate, securing the state’s first Democratic Senate victory since 1932.
Democrat Josh Turek won a competitive Senate race in Iowa by four percentage points in a state Trump had carried by 14 percentage points in 2014.
In South Carolina, Democrat Annie Andrews defeated Darlene Graham by at least four percentage points. Graham, the sister of the late Trump ally Lindsey Graham, had been appointed to fill the seat following his death earlier this year and received strong backing from Trump.
Meanwhile, Democrat Roy Cooper secured a commanding victory in North Carolina, defeating Republican Mike Whatley by nearly 20 percentage points.
In Maine, Democrat Troy Jackson unseated Republican incumbent Susan Collins by almost seven percentage points, while Sherrod Brown defeated Republican Jon Husted by nearly four percentage points in Ohio.
In Michigan, Democrat Abdul El-Sayed claimed victory over Republican Mike Rogers while maintaining a lead in the high-profile contest. If confirmed, El-Sayed will become the first Muslim senator in US history.
What the Democratic majority means for Trump
With control of both chambers, Democrats have gained significant constitutional powers to challenge the president’s executive actions, although several legislative hurdles remain.
The Senate has exclusive authority over presidential nominations, giving Democrats the power to block Trump’s choices for cabinet positions, ambassadorships and federal judgeships, including potential Supreme Court vacancies.
A Senate majority also gives Democrats control of committees that can launch formal investigations, demand documents and issue subpoenas to compel witnesses to testify.
The House can impeach executive officials, while the Senate conducts impeachment trials and decides whether to remove them from office. Trump was impeached twice during his first term, in 2019 and 2021, but was acquitted by the Senate on both occasions.
However, passing legislation will remain challenging. Bills must secure approval from both chambers before reaching the president, who can veto them.
Trump signalled his opposition to potential Democratic legislation ahead of the election, declaring on a podcast on Monday: “I’ll veto everything.”
Overriding a presidential veto requires a two-thirds majority in both the House and Senate, meaning Democrats would need support from Republicans even to pass bipartisan measures such as raising the minimum wage.
Trump administration faces intensified scrutiny
Oversight of the Trump administration is expected to become a central part of the Democratic agenda.
Laura Blessing, a senior fellow at Georgetown University’s Government Affairs Institute, told Al Jazeera: “In terms of time spent and newspaper ink spilled, this is where you’re going to see the most action from Dems, by a mile.”
Senator Richard Blumenthal, the ranking Democrat on the Senate’s Permanent Subcommittee on Investigations and its expected incoming chair, told Reuters in September that Democrats would “use our subpoena power, absolutely” to scrutinise the administration’s activities.
Congressional investigations do not require White House approval, a significant factor as the Trump family has expanded its business interests over the past two years into cryptocurrency, drones, artificial intelligence and prediction markets.
Financial disclosure forms released this year indicate that Trump’s personal wealth has increased by an estimated $2.2 billion.
Senate Democrats have already begun laying the groundwork for investigations by sending letters to private companies and government departments demanding the preservation of records concerning private donations solicited for a White House ballroom and allegations of politically motivated investigations.
Trump administration officials could challenge subpoenas in court, potentially causing lengthy delays. However, Blessing noted that Democrats could question numerous government employees and personnel from affiliated organisations even if members of Trump’s immediate family refuse to cooperate.
The legal consequences of such investigations remain uncertain, as criminal prosecutions depend on Trump’s Justice Department and no US president has ever been removed through impeachment.
The party must also balance its oversight efforts with voters’ immediate economic concerns.
Democratic Senator Sheldon Whitehouse told The Hill that the party must be “thoughtful and strategic about where investigative work goes and not allow that to distract us from solving fairly immediate cost problems that American families feel”.
Foreign policy and the war on Iran
Democrats will officially take control of the Senate on 3 January, making the next two months particularly significant for the US-Israel war on Iran.
Trita Parsi, executive vice-president of the Quincy Institute for Responsible Statecraft, warned that Trump could respond to the election setback by escalating military operations before Democrats assume power.
“In the face of humiliation and defeat, he becomes more reckless,” Parsi said.
Once in control, Democrats could seek to restrict funding for the war. Although the administration can spend funds already allocated, additional military appropriations require congressional budget legislation, which remains subject to a presidential veto.
David Janovsky, a policy analyst at the Project on Government Oversight, said rigorous Senate scrutiny of the war’s legality could increase the political costs for the administration, even though Congress has historically been reluctant to withhold military funding.
Parsi warned that Democrats risk becoming complicit in the conflict if they fail to challenge the administration, saying they would “co-own” the war.
Democrats focus on economic pressures and cost of living
Addressing the cost of living, identified as voters’ top priority, remains a central commitment for Democrats.
Dean Baker, an economist and co-founder of the Center for Economic and Policy Research, said efforts to end the war on Iran could provide immediate economic relief.
Iranian restrictions on commercial shipping through the Strait of Hormuz since February have disrupted global fuel and fertiliser trade. Reducing tensions could help lower petrol prices and ease pressure on household budgets, he noted.
On healthcare, Democrats plan to use government spending negotiations to push for the restoration of enhanced Affordable Care Act subsidies that expired in 2025 and reverse cuts to Medicaid.
Baker said widespread public support for such measures could make a presidential veto politically difficult.
Reversing Trump’s tariffs, however, would require approval from the House and either the president’s consent or a veto override.
Alex Jacquez, chief of policy and advocacy at Groundwork Collaborative, observed that while prices “shoot up like rockets; they come down like feathers”, Democrats could still deliver tangible results without presidential approval.
They could use their control of Senate committees to subpoena corporate executives and investigate companies over the prices of groceries, rents and electricity bills.
