How Will the U.S. Midterm Elections Affect Markets? A Critical Period for Stocks and Sectors
As the November 3, 2026, U.S. midterm elections approach, investors have begun assessing the potential impact of political uncertainty on stocks, bonds, and various sectors. Coinciding with geopolitical tensions, the inflation outlook, and the Fed's interest rate policy, the elections are expected to increase market volatility in the final part of the year.
Historical data show that the U.S. stock market delivers more modest returns in midterm election years compared with other years, while a strong recovery trend often emerges in the period following the elections. However, there is no guarantee that past performance will be repeated in the future.
The S&P 500 Posts More Modest Gains During Midterm Election Years
According to data dating back to 1931, the S&P 500 index has delivered an average return of 4.7% during U.S. midterm election years. In years without midterm elections, the index's average annual return has been 9.5%.
Recent examples also show that the political calendar can coincide with periods of market uncertainty. The S&P 500 fell 18.1% in 2018 and 4.4% in 2022. Alongside political developments, the Fed's interest rate hikes and tightening financial conditions played significant roles in these declines.
Therefore, political outcomes are not the only factor determining market direction during midterm election periods. Inflation, interest rates, economic growth, and corporate earnings also continue to play decisive roles in investors' decisions.
Tendency for Stocks to Recover After the Elections
One notable aspect of historical performance is the potential for equities to perform more strongly after the elections have concluded.
The S&P 500 has gained an average of 6.4% in fourth quarters following midterm elections. Since 1970, it has also delivered an average return of 6.5% over the three-month period following midterm elections.
Longer-term data point to a similar trend. Since 1962, the S&P 500 has not recorded a negative return during the 12-month periods following midterm elections, with the average gain reaching 16.33%.
This performance suggests that reduced political uncertainty once election results become clear could support investor confidence. However, major economic factors, such as monetary policy or geopolitical risks, could override this historical trend.
Why Does Congressional Control Matter for Markets?
The November 3 elections will determine all 435 seats in the House of Representatives, 35 of the Senate's 100 seats, and 36 state governorships.
Republicans hold a 53–47 majority in the Senate, while their advantage in the House of Representatives is limited to just five seats. As a result, the election outcome could directly affect the political room President Donald Trump has to maneuver on economic and foreign policy during the second half of his term.
Expectations that Democrats could win control of the House of Representatives are gaining ground, while the Senate race is expected to be more competitive. Results in states such as Maine, Michigan, Georgia, North Carolina, Texas, Ohio, Alaska, and Iowa could prove critical in determining control of the Senate.
A shift in the balance of power in Congress could affect tax policies, government spending, regulations, and budget decisions. This uncertainty could increase price volatility, particularly in sectors where political decisions directly affect corporate revenues.
Trump's Approval Rating and Political Uncertainty
President Trump's public approval rating falling to 35% or below in some polls has intensified debate over the direction of the election race. Meanwhile, his support remaining at higher levels among Republican voters shows that the political landscape varies across voter groups.
Prediction markets favor the possibility of Democrats winning the House of Representatives, while the outlook for the Senate remains less clear.
In addition, many members of Congress are not seeking reelection, creating opportunities for new candidates to enter the race in certain districts. This increases the possibility that the existing political balance could shift in unexpected ways.
Which Sectors Stand Out During Midterm Elections?
Sector performance during past midterm election years suggests that investors tend to favor more defensive sectors before elections and shift toward more cyclical sectors afterward.
The healthcare sector has historically stood out during midterm election years, delivering an average return of 10.7%. The energy sector has also attracted attention with an average gain of 8.9%. Meanwhile, industrials and financials have tended to post relatively flat performance during the same periods.
Before elections, relatively defensive sectors such as consumer staples, healthcare, communication services, and utilities can remain more resilient. Because demand for these companies' products and services is less sensitive to the economic cycle, they may attract investor interest during periods of uncertainty.
After elections, cyclical consumer sectors, energy, financials, industrials, technology, and materials companies may deliver stronger performance. Reduced political uncertainty and investors reassessing their economic growth expectations can support this trend.
However, as sector performance varies depending on economic conditions, historical averages alone are not sufficient grounds for making investment decisions.
The Fed's Interest Rate Policy Could Matter More Than the Elections
As the U.S. midterm elections approach, investors may need to look beyond political outcomes. The Fed's fight against inflation and the future path of interest rates will continue to be critical factors influencing the direction of equity markets.
High interest rates increase companies' financing costs and can reduce the present value of future earnings. This can put pressure on technology companies, particularly those with high valuations. Conversely, declining interest rate expectations can support a recovery in equities.
The elections' potential impact on foreign and trade policy will also be closely monitored for its implications for energy prices, the dollar, and global risk appetite. Consequently, the market impact of the political outcome will largely depend on the prevailing economic environment.
A Critical Period for Markets Ahead of the November Elections
The U.S. midterm elections are among the key developments investors will be watching closely in the final part of 2026. Although historical data suggest that returns may be more modest before elections and performance may strengthen afterward, current economic and geopolitical conditions could produce a different outcome.
In the coming period, the balance of power in Congress, the Fed's interest rate decisions, inflation data, and corporate financial results will jointly influence market direction.
For investors, the central challenge will be distinguishing short-term volatility caused by the elections from longer-term economic trends. Reduced political uncertainty could support equities; however, persistently high interest rates or escalating geopolitical risks could limit the recovery expected after the elections.