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Midterms change Congress, not the macro regime

The 2026 midterms may have changed Washington, but they haven’t changed the macro regime. Tariffs, geopolitics, and deficits remain key forces for investors.

5 min read
Matthew J Bartolini
Global Head of Research

The big question coming out of the midterms is whether they will change the macro regime itself. The answer is likely no. The forces shaping markets today—tariffs, geopolitics, deficits, and the shift from globalization toward self-sufficiency—are unlikely to be reset by Congress.

Democratic control of Congress may not mean a policy reset

Democratic control of Congress may shift the legislative agenda, but many of the policy levers driving market volatility remain with the executive branch (Figure 1). As a result, while legislative uncertainty may fade, broader policy-driven volatility may persist. Trade policy, in particular, remains an important executive branch tool and may increasingly be used to pursue targeted foreign policy objectives.

Will the historical post-midterm pattern hold?

Both US large-cap and small-cap equities historically have posted positive returns after midterms as the political overhang clears.1   This cycle could follow that pattern, especially with resilient earnings and improving economic surprises supporting risk assets.

But a potentially favorable backdrop for equities doesn’t mean all macro risks have faded. Federal Reserve policy, not Congress, will remain the driver of rates. And deficits are unlikely to be meaningfully addressed, given the constraints of the reconciliation process and limited political incentive to tackle spending, tax policy, or public borrowing.

That leaves investors wrestling with rising term premia, stubborn inflation, elevated Treasury supply, and fiscal credibility concerns. Those fiscal concerns extend overseas, with structurally large deficits posing challenges for policymakers globally.

Therefore, while bonds may continue to play an important role, they may not be as reliable a diversifier as they were in the prior disinflationary regime.

Political and fiscal uncertainty also may create near-term volatility through debt-ceiling debates or potential shutdowns. Those episodes can be disruptive, but they usually resolve. That’s why diversification may matter more when growth, inflation, rates, policy, and geopolitics are less synchronized.

How can investors build resilience for the road ahead?

Portfolios built around one dominant risk factor—or that rely too heavily on the traditional stock-bond relationship—may be less resilient in this environment.

In a post-midterm cycle unlikely to deliver a meaningful macro regime shift, consider these broad multi-asset diversifiers:

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