Finance1 min read

Some investors have midterm election jitters. Here’s what history shows about stocks

By · Published by Everything Blog

In short

Recent polling indicates Democrats are favored to reclaim the House and narrowly win the Senate, potentially shifting the balance of power in Washington. Voters are actively weighing economic affordability, President Donald Trump's record, artificial intelligence infrastructure, and the war with Iran. Despite the impending political shift, historical data indicates that stocks consistently find their footing once election uncertainty lifts. Over the past five decades, the S&P 500 has achieved comparable annualized price returns under both divided and unified leadership in Washington.

Key points

  • Heightened market volatility is standard during midterm election cycles due to elevated p…: Heightened market volatility is standard during midterm election cycles due to elevated policy uncertainty before votes are tallied.
  • Historically, equity markets tend to stage a reliable rebound in the months immediately f…: Historically, equity markets tend to stage a reliable rebound in the months immediately following the resolution of midterm contests.
  • Divided government has historically produced equity returns comparable to unified rule, a…: Divided government has historically produced equity returns comparable to unified rule, averaging a 9.24% annualized price return over 50 years.

Sources checked by our analysis pipeline: 1

With the midterm elections approaching, some investors worry about how the results will impact their portfolios. Whether their anxiety is warranted is another question.

Nearly half of surveyed investors — 48% — said they are concerned about the Nov. 3 midterms' potential impact on the stock market, according to Morgan Stanley Wealth Management's latest quarterly retail investor pulse survey, conducted Oct. 1-23 among 953 U.S. investors.

Separately, the Nationwide Retirement Institute, a research and education division of insurer Nationwide, found that 56% of surveyed investors said they feel more anxious because of the elections, and 75% believe the results could meaningfully affect their long-term financial plans. That survey was conducted Aug. 24-Sept. 11 among 2,029 investors with investable assets of at least $10,000.

"This summer and fall, the midterms have been probably the first topic of conversation with almost every [client] meeting that I've had," said John Mullen, managing director, president and CEO of Parsons Capital Management in Providence, Rhode Island. The firm ranked No. 25 on CNBC's Financial Advisor 100 list for 2026.

While it's impossible to predict how…

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