The Dow Jones Industrial Average climbed 1,569.40 points, or 3%, on Wednesday, Nov. 4, its biggest gain of the year, as markets reacted to Democrats’ reported victories in the midterm elections. The S&P 500 gained 1.6% and the Nasdaq Composite rose 1.4%, according to Associated Press market data.
Democrats won control of both the House and Senate in the Nov. 3 elections, AP reported. The change will take effect when the new Congress begins on Jan. 3, 2027, rather than immediately after election day.
The market rally coincided with the election results, but investors also weigh factors such as corporate earnings, economic growth and interest rates. Analysts quoted by CBS said the outcome was unlikely to produce sweeping near-term policy changes, since legislation can face obstacles in the Senate and President Donald Trump retains veto power.
Investors weigh sector-specific effects
Shares in solar power companies, dollar-store chains and hospital operators were among the market’s gainers, CBS reported. Trump Media & Technology fell nearly 25%, while Tesla shares dropped 3.3%.
The election may shape policy debates affecting data-center construction and the artificial intelligence industry. Spending on AI infrastructure has helped drive stock gains, while concerns about a possible technology-stock bubble remain. LPL Research’s Jeff Buchbinder said state and utility-level decisions could affect the pace of data-center development, even if federal policy changes are limited.
Wall Street has historically seen stocks perform well after midterm elections. Edward Jones figures cited by CBS put the S&P 500’s average gain in the six months after the previous 14 midterms, dating to 1970, at 15.5%. Past performance does not establish what markets will do after the 2026 election.
AP’s election coverage reported the shift in congressional control; the final outcome does not mean Democrats can pass legislation without opposition or presidential constraints.

