US Midterms 2026: Democrats take control of Congress

The Democratic takeover of Congress should create political gridlock that is broadly supportive for equities, while tighter monetary policy and possible AI regulation create divergent implications across markets.

• Democrats have retaken both chambers but apparently lack filibuster- and veto-proof majorities, limiting the scope for major fiscal and monetary policy changes.
• US equities may remain volatile in the short term, but the S&P 500 has not recorded a negative return in the 12 months after a midterm election for 88 years, with an average gain of 14%.
• The Federal Reserve may deliver a 25-basis-point hike in December, taking the fed funds target range to 4.00%-4.25%, while persistent inflation and policy lags could lead to further tightening in 2027.
• A Democratic Congress may seek to regulate AI and slow data-center construction, potentially weighing on growth and profits but supporting bonds if growth and inflation moderate.
• Democratic control should constrain White House-led fiscal expansion, although a possible push to restore planned Medicaid spending cuts could partly offset that restraint.

Takeaway: Investors should look beyond election-related noise toward continued equity opportunities from economic growth and infrastructure spending, attractive liquidity yields under a higher-rate scenario, and potential support for bonds if AI regulation slows growth.