What the 2026 Midterm Election Results Mean for Investors

While elections can create short-term volatility, history suggests that political outcomes alone are rarely the primary determinant of long-term market returns. Economic growth, corporate earnings, interest rates, and the financial health of businesses and households are likely to remain more consequential.

Watch the video for our perspective on what the midterm results could mean for investors and markets in 2027.

What Changed After the 2026 Midterm Elections?

Democrats won control of both the House and Senate, shifting the balance of power in Washington. The shift gives Democrats considerably more influence over legislation and congressional oversight. But control of Congress does not necessarily translate into sweeping policy changes.

Neither chamber has the two-thirds majority generally necessary to override a presidential veto. As a result, major legislation will still require some degree of bipartisan compromise with the Trump administration. That could limit the prospects for more substantial policy changes, including significant changes to federal tax law.

For investors, that distinction is important: a change in congressional control does not automatically mean an immediate change in the rules affecting portfolios, businesses, or households.

Could Budget Negotiations Create Market Volatility?

The more immediate source of political uncertainty may be upcoming fiscal deadlines.

Federal agencies are currently funded through December 11, 2026, under a continuing resolution. Congress must approve full-year appropriations or another extension before that funding expires to avoid a funding gap beginning December 12.

That leaves the outgoing Congress with an important fiscal decision before the newly elected Congress takes office in January.

Spending priorities, tariffs, healthcare, and other policies could become bargaining points in these negotiations. Although another short-term funding measure remains possible, investors should be prepared for political headlines, including the possibility of a government shutdown or other periods of heightened uncertainty.

The key distinction is between headline risk and investment risk. Political negotiations can affect sentiment and market volatility over short periods without necessarily changing the long-term economic or investment outlook.

What Could the Election Mean for Federal Spending?

A Democratic Congress may push for higher spending in some areas and seek to reverse certain cuts enacted during the prior Congress.

That could make reducing the federal deficit more difficult in the near term. For investors, the significance extends beyond Washington: persistently large deficits can influence Treasury issuance, interest rates, and the broader debate about the country's fiscal trajectory.

Still, congressional control is only one part of that equation. Any substantial new spending legislation would have to navigate the president's veto power and the realities of a divided federal government.

Could the Elections Affect Artificial Intelligence Investment?

One potentially important investment issue is developing outside Washington: state regulation of AI data centers.

Opposition to data center development featured prominently in several 2026 elections and ballot measures. Texas is particularly notable. Governor-elect Gina Hinojosa campaigned for a moratorium on new data center approvals until the state legislature establishes new protections surrounding issues such as electricity demand and water use.

That matters because Texas has become one of the country's largest markets for prospective data center development. Wells Fargo estimates cited by CNBC put approximately 27% of planned U.S. data center gigawatts in Texas.

A pause therefore could delay some projects and encourage developers to consider alternative locations. But that is different from assuming the broader AI infrastructure buildout will stop. Existing projects are already substantial, and developers can shift future investment geographically.

For investors, the election result may therefore be less about the future of AI itself and more about where, how quickly, and at what cost the infrastructure supporting AI gets built.

Do Midterm Elections Affect the Stock Market?

Historically, stocks have often performed well following midterm elections. Historical market data shows that U.S. stocks returned an average of approximately 12.4% in the 12 months following 31 midterm elections since 1900, compared with 8.9% across all years.

However, investors should be careful about treating that pattern as a forecast. Those averages conceal enormous differences among individual periods. Thirty-one observations are also a relatively small sample, and many factors besides politics affected markets during those 12-month periods, including recessions, wars, energy shocks, and financial crises.

Historical averages may provide context, but the outcome of a midterm election by itself is not a reliable market-timing signal.

What Should Investors Focus on After the Midterms?

The election changes the political environment, but it does not fundamentally change the principles that drive long-term investing.

In 2027, we believe investors will be better served by watching factors such as economic growth and the risk of recession, inflation and Federal Reserve policy, interest rates and Treasury yields, corporate earnings and balance-sheet strength, household finances and consumer spending, and the pace and economics of AI infrastructure investment. These forces are more likely to shape longer-term market outcomes than any single election result. 

Political developments may still generate volatility, particularly as Washington approaches funding and fiscal deadlines. But short-term political uncertainty is not necessarily a reason to abandon a well-constructed investment strategy.

Final Thoughts

Elections matter, but they rarely matter as much to long-term investment returns as they appear to in the immediate aftermath.

The 2026 midterms have changed control of Congress and could influence fiscal negotiations, spending priorities, and regulation. Yet the outlook for investors will continue to depend more heavily on economic conditions, corporate performance, and the strength of household and business balance sheets.

If the election results or recent market developments have raised questions about your portfolio, consider speaking with your advisor about how they fit within your long-term financial and investment strategy.