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专题4月21日 · Morgan Stanley

US Midterm Election Outlook: Sector Rotation and Market Strategy Amid Policy Continuity

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US Midterm Elections: Sector Rotation Under Policy Continuity

Core Thesis

The midterm elections will not shift primary macro drivers like tariffs or deregulation but will dictate the pace of incremental policy change, creating divergent sector impacts. Fiscal policy, particularly SNAP/Medicaid adjustments, AI infrastructure, and energy permitting are key battlegrounds. Investors should position for sector-specific outcomes rather than a broad market shift, with a cohesive Democratic sweep viewed as most favorable for delaying consumer-facing headwinds, while divided government supports data center REIT pricing power.

Evidence Chain

Policy Continuity Trumps Partisan Shift. Major market vectors—trade policy, geopolitical stance, and financial deregulation—remain under executive control and will persist regardless of election outcome. The business cycle and earnings trajectory, with forward EPS growth above 20%, are the dominant drivers. Historical post-midterm market returns average +22% over the subsequent 12 months, and Year 3 of the presidential cycle typically yields +19%, suggesting a supportive backdrop.

Fiscal Policy Has Micro, Not Macro, Consequences. The election's most direct impact is on fiscal adjustments, especially the ~$9B in SNAP cuts slated for 2026 per the OBBBA, a ~60-bp headwind to food-at-home spending. A cohesive Democratic majority could delay or soften these cuts, benefiting exposed consumer staples (KHC, PEP) and retailers (GO, BJ). A Republican win would see cuts proceed as legislated, pressuring low-income demand for restaurants (DRI) and value retailers. Each week of a government shutdown, a risk in divided scenarios, could shave 0.20ppt from quarterly GDP growth.

AI Development Faces Bipartisan Push & Physical Constraints. AI is a core geopolitical asset with bipartisan support for industrial policy; U.S. LLM developers' compute lead over China is projected to be vast (>25k vs. <1k exaFLOPs). However, growth is increasingly bound by physical infrastructure and political backlash. 31% of voters blame data centers for rising electricity prices. A Republican win could ease permitting, aiding hyperscale buildout, while divided government best supports data center REIT pricing power by maintaining supply constraints. Incremental AI regulation is inevitable but unlikely to derail the sector.

Key Risks and Divergences

The primary risk is not policy reversal but procedural gridlock. A fragile Democratic majority or divided government raises the likelihood of episodic government shutdowns and debt ceiling brinkmanship, creating event volatility. Sector-specific risks include SNAP cuts for consumer sectors, MFN drug price codification under a Republican win for pharma, and a slower pace of financial deregulation under Democratic oversight. AI infrastructure faces binding constraints from public pushback, potential local moratoriums, and energy/permitting bottlenecks, which could delay the buildout fueling the sector's growth.

Valuation and Trade Implications

Position for policy scenarios through sector and single-name exposure. Favor consumer staples and high-SNAP-exposure retailers (GO, BJ) if a Democratic sweep appears likely, as this scenario offers the clearest path to mitigating near-term consumer headwinds. In divided government or Republican win scenarios, data center REITs stand out for their relative pricing power and barriers to new supply. Implement curve steepeners (5s30s) in rates under a Republican win scenario, and hold duration in the 5-10y sector if a Democratic sweep materializes. In FX, favor cross-G10 expressions like long AUD/JPY in a status quo (R win) outcome over a outright dollar directional bet.

Appendix: Key Data Summary

Sector / PolicyR Win (Unified)D Sweep (Cohesive)Divided / Gridlock
Consumer (SNAP Exposure)Negative. Cuts proceed.Positive. Cuts delayed/softened.Neutral. Gridlock limits change.
Data Center REITsPositive. Easier permitting.Neutral. Higher costs for incumbents.Most Favorable. Sustained pricing power.
FinancialsPositive. Deregulation continues.Neutral. Oversight may slow pace.Neutral. Status quo.
Selected SNAP Exposure% of Spend
GO~9%
BJ~7%
KHC~7.3%
PEP (Beverages)~5.7%

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