But other factors would also have been motivating voters in these states, as elsewhere.
BBC Verify analysis of state-level voter polling for Senate elections suggests states which swung to the Democrats either followed the national trend over data centre concerns, or seemed less concerned.
So we can’t say how many votes or Senate seats were directly delivered by data centre opposition.
But it’s notable that three key states in the US AI build-out, Texas, Georgia and Ohio, all elected Democrats as senators and governors who called for tighter regulation on data centres in one form or another.
These proposals include:
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temporary bans on construction
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ending tax breaks
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requirements to fully cover their own energy and water infrastructure costs
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mandates to use unionised construction workers
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stricter environmental and transparency safeguards
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local rights to veto