U.S. Midterm Elections: 10 Things that Matter for Markets and Economies

The 2026 midterm elections are likely to produce a Democratic sweep, limited legislative action and greater macro-market risks through deficits, executive action and a contentious 2027 debt-ceiling standoff.

• Major probability models, betting markets and political polls have shifted toward a Democratic sweep, although winning the Senate requires Democrats to prevail in states won by President Trump in 2024 while defending competitive seats.
• Historically high deficits have already contributed to higher long-term bond yields, and agreement on defense, infrastructure and cost-of-living adjustments could push the fiscal outlook higher after the election.
• A divided government would likely increase reliance on executive action, including tariffs that could lift the average effective rate toward the mid-teens and potentially renewed escalation involving Iran.
• Possible AI measures include independent audits, safety guidelines and environmental reviews; moderate restrictions could slow, but not derail, AI development and produce a slower-for-longer capital-expenditure cycle.
• Democratic investigations could target crypto, betting markets and businesses linked to senior officials, while populist alliances may create uncertainty for private credit, housing and Wall Street activities connected to affordability.

Takeaway: Investors should focus less on near-term legislation than on rising fiscal, policy and market-volatility risks, especially a possible government shutdown and a debt-ceiling standoff whose X date PGIM estimates will fall in mid-to-late summer 2027.