Following the 2026 US midterm elections, Democrats have achieved a sweeping victory, capturing control of both the House of Representatives and the Senate. The results represent a major shift in Washington's balance of power, as voters delivered a strong rebuke of President Donald Trump’s agenda and handed Republicans a series of heavy losses across the country.

In the wake of the defeat, Vice-President JD Vance pointed directly to the ongoing war with Iran as a primary catalyst for the electoral setback. Vance stated that it was "obvious to almost everyone" that the conflict proved to be the underlying reason for the Republican party's brutal losses at the ballot box.

The Democratic majority was built on a coast-to-coast wave that included flipping seven Senate seats and overcoming Republican redistricting advantages to secure the House. Meanwhile, House Speaker Mike Johnson announced he would not seek a leadership role following the outcome. Financial markets reacted to the political shift with notable movement, as Wall Street initially surged at the opening bell before settling amid trader reactions to the incoming congressional majority.