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Large Polymarket purchase backs Democratic House control ahead of midterms

Lacuna lists the purchase as a recent whale trade in the House control market, alongside a 179,000 dollar purchase of Yes on Democrats winning the Michigan Senate race at 76.8 cents. House control is priced near 95 cents ahead of the November 3 midterms.

A wallet identified as elmcap2 bought 475,000 dollars of Yes on Democrats controlling the House at 95 cents on Polymarket, according to Lacuna.

The purchase appeared in Lacuna’s recent whale-trade listings. The summary, published Oct 31, 2026 · 7:30 PM ET, places House control near 95 cents ahead of the November 3 midterms.

Two Democratic outcomes draw large purchases

Lacuna also listed a 179,000 dollar purchase of Yes on Democrats winning the Michigan Senate race at 76.8 cents. The supplied material does not identify the wallet behind that purchase.

The House trade was executed at a price close to the market’s reported level. Neither listing establishes whether the purchases moved prices or formed part of broader positions.

What it means for prediction markets

  • The 95-cent House price reflects a strongly favored Democratic-control outcome, not a settled result.
  • The Michigan Senate purchase occurred at 76.8 cents, below the reported House price, though the contracts concern different outcomes.
  • The trade sizes show substantial purchases of Yes contracts. Without additional trading history, they do not establish a change in market sentiment.
PolymarketSenateInfiniti MarketsInfiniti Signals

Sources & attribution

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    Lacuna
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