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kalshi historical data / elections / KXHOUSEPOPVOTEMARGIND
§elections

2026 House popular vote Democratic minus Republican margin, tick by tick.
Kalshi series KXHOUSEPOPVOTEMARGIND: order book and trades, 2026-09-27 → 2026-10-23.

The order-book and trade history of Kalshi's 2026 House popular vote Democratic minus Republican margin series (a one-off event): top of book on every change, the 25-level book on every change in YES terms, every trade with the taker's side, and Kalshi's own ticker, with exchange timestamps to the millisecond. Captured by us from Kalshi's websocket on two independent legs and checked against the exchange's own book snapshots.

27 days2026-09-27 → 2026-10-23 · every day since its first · ~821 kB per day · 22 MB on disk · 13 open markets
pull KXHOUSEPOPVOTEMARGIND days →schemapricing

What a KXHOUSEPOPVOTEMARGIND day contains

Four parquet files per day, every market of the series in each. Sizes are this series' own averages over its 27 days on disk.

Top of book (every change)kalshi_l1

Best YES bid and ask with sizes and the spread, one row whenever either changed, derived tick by tick from the rebuilt book: not Kalshi's conflated ticker.

~64 kB per KXHOUSEPOPVOTEMARGIND day
Order book, 25 levels, every changekalshi_l2

The whole ladder after every book event, in YES terms (the NO bids become the asks, at their sizes), 25 levels a side: wide columns bid_px_1 … ask_sz_25, plus the exchange's own hourly snapshots. Each row is self-contained, so you can start reading mid-day.

~693 kB per KXHOUSEPOPVOTEMARGIND day
Tradeskalshi_trades

Every trade: YES and NO price, size in contracts, the taker's side, block-trade flag, trade id.

~8 kB per KXHOUSEPOPVOTEMARGIND day
Kalshi ticker (~1 s)kalshi_ticker

Kalshi's own ticker feed, about one update a second per market: last price, YES bid/ask with sizes, cumulative volume and open interest in contracts and dollars.

~55 kB per KXHOUSEPOPVOTEMARGIND day

KXHOUSEPOPVOTEMARGIND markets

The 12 closing nearest to now, from Kalshi's daily market list. Each is a row key (market_ticker) in every table, captured from the day it opens until it settles.

Will Democrats win the 2026 national House popular vote by at least 10 percentage points?: Democrats, ≥10%KXHOUSEPOPVOTEMARGIND-26NOV03-AL10closes 2027-02-03 15:00 UTC
Will Democrats win the 2026 national House popular vote by at least 11 percentage points?: Democrats, ≥11%KXHOUSEPOPVOTEMARGIND-26NOV03-AL11closes 2027-02-03 15:00 UTC
Will Democrats win the 2026 national House popular vote by at least 12 percentage points?: Democrats, ≥12%KXHOUSEPOPVOTEMARGIND-26NOV03-AL12closes 2027-02-03 15:00 UTC
Will Democrats win the 2026 national House popular vote by at least 13 percentage points?: Democrats, ≥13%KXHOUSEPOPVOTEMARGIND-26NOV03-AL13closes 2027-02-03 15:00 UTC
Will Democrats win the 2026 national House popular vote by at least 14 percentage points?: Democrats, ≥14%KXHOUSEPOPVOTEMARGIND-26NOV03-AL14closes 2027-02-03 15:00 UTC
Will Democrats win the 2026 national House popular vote by at least 16 percentage points?: Democrats, ≥16%KXHOUSEPOPVOTEMARGIND-26NOV03-AL16closes 2027-02-03 15:00 UTC
Will Democrats win the 2026 national House popular vote by at least 2 percentage points?: Democrats, ≥2%KXHOUSEPOPVOTEMARGIND-26NOV03-AL2closes 2027-02-03 15:00 UTC
Will Democrats win the 2026 national House popular vote by at least 4 percentage points?: Democrats, ≥4%KXHOUSEPOPVOTEMARGIND-26NOV03-AL4closes 2027-02-03 15:00 UTC
Will Democrats win the 2026 national House popular vote by at least 5 percentage points?: Democrats, ≥5%KXHOUSEPOPVOTEMARGIND-26NOV03-AL5closes 2027-02-03 15:00 UTC
Will Democrats win the 2026 national House popular vote by at least 6 percentage points?: Democrats, ≥6%KXHOUSEPOPVOTEMARGIND-26NOV03-AL6closes 2027-02-03 15:00 UTC
Will Democrats win the 2026 national House popular vote by at least 7 percentage points?: Democrats, ≥7%KXHOUSEPOPVOTEMARGIND-26NOV03-AL7closes 2027-02-03 15:00 UTC
Will Democrats win the 2026 national House popular vote by at least 8 percentage points?: Democrats, ≥8%KXHOUSEPOPVOTEMARGIND-26NOV03-AL8closes 2027-02-03 15:00 UTC

Coverage notes for KXHOUSEPOPVOTEMARGIND

  • First day on disk: 2026-09-27. That is the day our Kalshi capture began, not the series' launch. New days are added daily.
  • Trades before 2026-09-27. Kalshi's historical API has no tick-level order book, so earlier KXHOUSEPOPVOTEMARGIND trades are in the whole-exchange trades history (from 2021-06-30, one file a day): filter market_ticker to this series' markets, which start with KXHOUSEPOPVOTEMARGIND-.
  • The first day starts at 11:00 UTC. Our capture began at 11:00 UTC on 27 September 2026: 13 hours that day, not 24, and no CF Benchmarks index file (that capture starts on the 28th).
  • A book-quality dip on 2026-09-29. During a pipeline cutover 10,255 exchange snapshots disagreed with the rebuilt book (41 to 1,378 on every other day) and 16,678 negative levels were clamped to zero. The book resynchronises at every exchange snapshot; trades and ticker are unaffected.
  • Every bundle ships a README with the schemas and, per day, how often the rebuilt book matched the exchange's own snapshots, for your exact range.

Pricing

A month of KXHOUSEPOPVOTEMARGIND, every table, is about 24 MB. Bought for Kalshi, Starter ($29/mo) carries top of book, trades and the ticker for every series plus one series of your choice, KXHOUSEPOPVOTEMARGIND if you like, at full book depth; L10 ($49/mo) carries every series' book at 10 levels and L25 ($99/mo) the full 25-level book. Each includes 7 days before you join and every day after. Any free account can pull 2026-10-07, any series, up to 1.0 GB.

Starter: KXHOUSEPOPVOTEMARGIND at full depth →L10: every series at 10 levelsL25: every series, 25 levelsfree sample day

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