History Shows: This Midterm Election Result Could Be a Warning Sign for the Stock Market

Polling cited by the article gives Democrats a 97% chance of winning the House and a 64% chance of taking the Senate in the November 2026 midterms, raising the prospect of divided government under President Trump. Historical U.S. Bancorp analysis indicates that a Republican president with Democratic control of Congress has corresponded with S&P 500 returns about 0.99% below average over the following three months. The article stresses that the potential decline is modest and notes that the S&P 500 has historically outperformed in the year after midterms regardless of congressional control, while delivering roughly 10% annualized returns since 1928.

Analysis

The cited historical effect is too small and regime-dependent to support an outright S&P 500 de-risking: a roughly 1% three-month average gap is below normal index noise and likely reflects contemporaneous growth/inflation conditions rather than congressional control. The more investable channel is a potential reduction in fiscal-deficit, tariff, and policy-volatility premia if checks on the executive branch become credible. That would favor duration-sensitive megacap growth and long-duration Treasuries over cyclicals whose earnings require sustained nominal-growth acceleration.

For the next 1-3 months, polling changes can matter more through rates positioning than equity-election beta. A falling 10-year yield would support NVDA's valuation multiple disproportionately, while USB faces a mixed outcome: unrealized securities marks improve, but lower asset yields and potential regulatory tightening can pressure medium-term NII and capital returns. NFLX has limited direct legislative sensitivity; any election-driven trade in the stock would be primarily through discount rates and consumer-risk appetite, not fundamentals.

The contrarian view is that a divided-government outcome may be modestly risk-positive rather than negative if it caps fiscal expansion and reduces the probability of abrupt trade or sector-policy changes. Conversely, if Treasury yields remain elevated because inflation data or term premium dominates politics, the presumed gridlock/duration trade fails; that macro outcome matters materially more than the election result over 6-18 months.

Key Decisions for Investors

• Do not reduce core SPX/VOO exposure solely on election polling; treat any pre-election 3-5% index drawdown without a concurrent deterioration in payrolls, inflation, or credit spreads as a tactical add opportunity rather than a structural risk signal.
• Establish a modest 1-3 month relative-value position: long QQQ or NVDA versus short KRE, sized at 1:1 beta, only if the 10-year Treasury yield breaks below its 50-day moving average after election odds move further toward divided government. Target 5-8% relative return; exit if the 10-year yield rises 35bp from entry or NVDA guidance weakens.
• Keep USB neutral to underweight versus money-center peers through the election window. Reassess after its next earnings release for NII sensitivity, deposit beta, and capital-return commentary; a meaningful NII-guide cut or tougher bank-capital framework would support a short USB/KBE relative trade over 6-12 months.
• Use a TLT call-spread or long TLT/short XLE overlay rather than broad equity puts to express a gridlock-driven decline in fiscal-risk premium. Enter only if post-election yields fall while breakevens remain contained; invalidate if 10-year breakevens widen above recent highs, signaling inflation rather than politics is setting rates.