The 2026 midterm results unsettled AI investors because they raised the prospect of tougher scrutiny of data centres and slower infrastructure growth. That concern landed amid a wider debate about whether huge AI investments would deliver adequate returns. The result was a sharp sell-off—but a market reaction to possible future changes, not evidence that new restrictions had already taken effect.
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Why the election raised infrastructure concerns
Several Democratic candidates had campaigned for limits on data-centre construction, pointing to concerns including electricity use and environmental effects. The party’s strong election performance strengthened the position of politicians seeking tighter oversight of AI and data-centre development.
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For investors, the risk was that a slower or more difficult build-out could disrupt the expansion plans underpinning expectations for AI-related businesses. That made data-centre operators, chipmakers and other companies tied to the infrastructure trade vulnerable to a reassessment of future growth.
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Why funding pressure mattered for smaller firms
The concern extended beyond large technology companies. Reporting noted that smaller firms were already finding it harder to raise funds amid higher interest rates and tighter financial conditions.
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If projects take longer to move forward, these firms may have to finance operations for longer before planned infrastructure can support revenue. That is a risk investors could weigh; it does not establish that specific projects were delayed or that smaller firms had already lost access to funding because of the election.
What the Nasdaq sell-off shows
On November 5, the Nasdaq Composite fell about 5.5%—its steepest one-day decline since the market turmoil of April 2025 known as “Liberation Day.” Reporting attributed roughly US$2.5 trillion in lost market value to the Nasdaq-100, a different index from the Nasdaq Composite.
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Election-related fears were part of a broader reassessment of the AI trade, with questions also emerging about whether heavy spending on AI infrastructure would produce expected returns.
8 The sell-off therefore signalled investor concern about both policy risk and the economics of the build-out. It did not, by itself, prove that the election alone caused the decline or that tighter rules would necessarily follow.
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