Split Congress May Boost Stocks Through 2027
Source: kiplinger ·
The 2026 midterm elections have been a closely contested and unpredictable affair, with Republicans facing a narrow margin of control in the House and uncertain prospects in the Senate.
The background
In the United States, the midterm elections are held every four years, halfway through a presidential term. The elections determine the control of Congress, with the House of Representatives and the Senate being up for election. A split Congress occurs when one party controls the House and the other party controls the Senate. This can lead to increased volatility and uncertainty in the markets, but it can also reduce policy risk and support equity upside.
Key takeaways
- Republicans are likely to lose control of the House of Representatives in the 2026 midterm elections.
- The stock market has historically performed well in the third year of a presidency, with an average annual return of 12.4% since 1926.
- A split Congress, with a Democratic House and Republican Senate, has produced an average annual return of 13.7% in the S&P 500 since 1933.
- Investors should expect fewer large legislative changes but more volatility around key issues such as government funding and the debt ceiling.
- The Democrats are widely expected to win enough seats to gain control of the House, while the Republicans have a 53-47 margin in the Senate.
Why it matters
A split Congress could lead to increased volatility around key issues, but it also reduces policy risk, supporting additional equity upside. This scenario has historically produced strong returns in the S&P 500, making it a positive sign for investors.
Bull case
- A split Congress reduces policy risk, supporting additional equity upside.
- The scenario has historically produced strong returns in the S&P 500, with an average annual return of 13.7% since 1933.
- Investors can expect fewer large legislative changes, but more volatility around key issues.
Bear case
- Increased volatility around key issues such as government funding and the debt ceiling.
- Potential for increased regulatory activity in areas such as the Consumer Financial Protection Bureau and banking regulations.
- Uncertainty surrounding the outcome of the midterm elections and the impact on the markets.
What to watch
- The outcome of the 2026 midterm elections, particularly the control of the House of Representatives.
- The impact of a split Congress on key issues such as government funding and the debt ceiling.
- The potential for increased regulatory activity in areas such as the Consumer Financial Protection Bureau and banking regulations.
Frequently asked
- What is the historical performance of the stock market in the third year of a presidency?
- The stock market has historically performed well in the third year of a presidency, with an average annual return of 12.4% since 1926.
- What is the expected outcome of the 2026 midterm elections?
- The Democrats are widely expected to win enough seats to gain control of the House, while the Republicans have a 53-47 margin in the Senate.
- What are the implications of a split Congress on the markets?
- A split Congress reduces policy risk, supporting additional equity upside, but it also increases volatility around key issues such as government funding and the debt ceiling.