Democrats Have Won Control of Congress. What Happens Next?

By 4 p.m., Democrats had secured 237 House seats, with Hakeem Jeffries predicting at least 255—the party’s largest House majority since early in the Obama administration. Democrats also held 54 Senate seats; Mississippi remained too close to call, while Alaska’s result could take weeks because of a late absentee-ballot deadline. J.D. Vance blamed Republicans’ defeat on the Iran war, and President Trump agreed that it hurt the party but defended the war as necessary to prevent Iran from obtaining a nuclear weapon. House Speaker Mike Johnson said he would not seek the new minority-leader post.

Reporter Rich Rubin said Democrats will focus on health-insurance, electricity and gas costs, tariffs, and the broader cost of living, although the Iran war makes gas prices difficult to influence legislatively. Senate Minority Leader Chuck Schumer said Democrats would use Congress’s power of the purse to end the war, with some Republicans already supporting that effort. Rubin cautioned that Democrats face a messaging challenge because their actions may not become law or immediately lower prices. Familiar committee leaders are expected to return, including Ron Wyden at Finance, Elizabeth Warren at Banking, and Patty Murray at Appropriations.

Robert Garcia is expected to lead the House Oversight Committee, which Democrats say will subpoena documents and hold hearings as a constitutional check on the executive branch; Garcia posted, “lawyer up.” Rubin identified possible investigations into Trump’s White House ballroom and other construction projects, cryptocurrency and donations, family businesses, and stock trading. Other targets include IRS tax enforcement, Health and Human Services and vaccines, and potentially cabinet impeachments, especially Secretary Pete Hegseth. Democrats may also investigate Elon Musk, health insurers, and pharmaceutical companies, but must act quickly during a two-year congressional window before the 2028 campaign.

Rubin said a Democratic Senate majority of 55 or 56 would not be filibuster-proof, forcing Democrats either to attract several Republicans for the 60 votes needed for ordinary legislation or to use reconciliation for fiscal measures. Reconciliation could reverse parts of last year’s “one big beautiful bill,” including tax provisions or Medicaid cuts, and pass with a simple majority before likely facing a Trump veto. Because a reconciliation bill need not satisfy every Democrat, party leaders could choose a more liberal measure or a less liberal one that progressive members might oppose.

Elon Musk spent more than $440 million supporting Republicans, but Democrats’ victory leaves him exposed to investigations of his role leading Doge, where critics viewed his spending cuts as brutal, and of SpaceX’s Starlink network and its alleged limits on Ukraine’s battlefield use. Tim Higgins said scrutiny could endanger SpaceX and Tesla as SpaceX considers a merger with Tesla and expands into AI. Musk’s attention is especially important amid competition among major technology companies. Tesla fell 3.4% and SpaceX 3.8%; on X, Musk joked that his “election-interfering space lasers” had failed.

The Dow gained 1,569 points, or 3%, its largest rise since April 2025; the Nasdaq and S&P 500 each rose about 1.5%, while oil dropped almost 9% below $95 a barrel. Jack Pitcher said investors welcomed the election’s orderly conclusion, noting that Trump accepted the results rather than creating post-election chaos. Vance’s statement blaming the Iran war reinforced expectations that the U.S. might seek de-escalation, which could support oil prices and broader risk assets. Investors also viewed divided government as making Trump’s economic actions more predictable.

Voters rejected data centers in several contests, raising the possibility that local governments and regulations will slow new construction. Pitcher said that could benefit established hyperscalers such as Microsoft, Amazon, Meta, and Alphabet, which already have data centers and may charge more while borrowing and spending less aggressively. Investors’ fears about those companies taking on excessive debt therefore eased. The result hurt chip stocks and construction companies supplying data-center parts and labor, whose valuations reflected expectations of slower buildout. McDonald’s separately reported about $2.5 billion in net income, while Kraft Heinz raised its sales outlook but said it plans price increases next year.