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Event-contract market data · Politics · Primaries

Primaries Prediction Market Data — Kalshi

Tick-by-tick trades and L2 order-book depth for 36 Primaries series on Kalshi — Florida, Texas, Ohio, Illinois, Indiana, Washington and California primary winners, vote percentages, primary margins of victory. 4,197 series-days covering February 2026 – present; 1.3M trades · $2.8M turnover over the last 30 captured days. Every contract captured co-located with nanosecond venue and receive timestamps — sold as day bundles, €1 per day, bought as a guest with instant download.

Browse Primaries bundlesAll politics series →Most traded series →
Series
36
Venues
Kalshi
Coverage
February 2026 – present
Series-days
4,197
Trades (30d)
1,273,078
Turnover (30d)
$2.8M
Since 2026-07-08
2.1M trades · $14.1M
About this topic

Primaries on Kalshi

State primary winners and advancers, primary vote shares and margins of victory.

Every series below is archived at full feed resolution — each contract file carries every trade print (price, size, side) and Level-2 order-book updates in one normalized, zstd-compressed schema. A series-day bundle holds all contracts of the series for one UTC day.

Most active

Most traded Primaries series (last 30 days)

Ranked by USD turnover from our own daily statistics — the series a market maker or bot builder should start with.

#SeriesVenueTrades (30d)Turnover (30d)Days
1Democratic Primary winnerKalshi1,228,064$714.3K30Buy days
2Massachusetts Primary WinnersKalshi8,063$432.9K10Buy days
3Vote percentages in primariesKalshi9,601$425.2K29Buy days
4Primary margins of victoryKalshi10,616$423.7K25Buy days
5Turnout in primariesKalshi2,761$375.1K17Buy days
6Republican Primary winnerKalshi8,551$277.3K30Buy days
7Massachusetts 6 Democratic primaryKalshi2,486$87.7K10Buy days
8AK primaryKalshi2,202$72.6K9Buy days
9Election place in primariesKalshi26$12.6K4Buy days
10Louisiana Primary WinnersKalshi620$8.6K30Buy days

Trades and USD turnover summed over every contract of the series, from the recorded tick data; 30 days to 2026-09-22. Series without statistics in the window are omitted.

Month by month

Primaries — development since capture

2,104,458 trades and $14.1M of USD turnover across 20 series since 2026-07-08; busiest single series-day 2026-08-18 with $1.3M, biggest contract KXPRIMARYPLACE-SCRSENS26-1-DGRA (2026-08-11, $616.5K).

MonthSeries activeDaysTradesTurnover (USD)Avg / dayContracts tradedL2 updatesvs previous month
Sep 2026 (month to date)1022917,350$1.3M$58.1K1,8328.0M—
Aug 202619311,163,779$12.0M$385.9K6,91745.0M—
Jul 202652423,329$816.0K$34.0K———

Primaries series — trades and USD turnover summed per calendar month (UTC) over every contract, from our own daily statistics of the recorded tick data. Days = captured UTC days; a partial month shows no month-over-month change. Contracts traded and L2 (order-book) updates exist for days captured with the extended statistics.

Weekly rhythm

Primaries — turnover by weekday

Tuesdays are the busiest day at about $202.3K of USD turnover, averaged over the captured days of the last 30.

Weekday (UTC)Avg turnover / dayUSDAvg tradesDays
Monday$76.9K42.4K5
Tuesday$202.3K42.0K5
Wednesday$199.4K47.1K4
Thursday$49.7K38.7K4
Friday$33.8K40.2K4
Saturday$38.3K42.0K4
Sunday$38.1K44.7K4

Primaries series — average USD turnover and trades per weekday over the captured days of the last 30, from our own daily statistics; weekdays without a captured day show —.

Rising

Rising Primaries series — 30 days vs the 30 before

#SeriesVenueTurnover (30d)Prior 30dGrowth (avg / day)Trades (30d)
1Massachusetts Primary WinnersKalshi$432.9K$42.8K+1417.6 %8,063
2Massachusetts 6 Democratic primaryKalshi$87.7K$11.7K+1028.6 %2,486
3Turnout in primariesKalshi$375.1K$330.6K+0.1 %2,761
4Republican Primary winnerKalshi$277.3K$153.6K−9.8 %8,551
5Democratic Primary winnerKalshi$714.3K$690.4K−48.3 %1,228,064

Growth of average USD turnover per captured day, the 30 days to 2026-09-22 against the 30 days before; series need ≥ 10 captured days in both windows and ≥ $10K of turnover in the current one. From our own daily statistics.

Daily activity

Primaries prediction markets — trades and turnover per day

Every captured UTC day of the last 30, summed over the 36 Primaries series — how much these markets trade day by day, from our own tick capture.

UTC daySeries with statsContracts tradedTradesTurnoverBuy shareL2 updates
2026-09-2246119,347$53.3K33 %151.2K
2026-09-2156836,218$62.2K46 %167.4K
2026-09-2055944,283$29.2K83 %149.0K
2026-09-1958144,132$27.7K77 %152.8K
2026-09-1855237,110$20.8K77 %124.2K
2026-09-1776736,862$25.5K86 %131.7K
2026-09-1677142,798$27.1K46 %203.1K
2026-09-1575944,332$55.9K74 %156.7K
2026-09-1476744,090$33.0K76 %162.8K
2026-09-1377144,564$33.1K78 %185.0K
2026-09-1276333,569$13.1K68 %104.5K
2026-09-1176239,907$19.2K64 %133.5K
2026-09-1078941,233$67.1K70 %527.0K
2026-09-09710745,472$71.2K78 %1.1M
2026-09-0879944,718$64.6K75 %269.9K
2026-09-0778544,302$28.0K88 %178.8K
2026-09-0668844,240$21.5K80 %172.4K
2026-09-0567444,256$19.5K75 %193.4K
2026-09-0468644,425$27.4K73 %155.2K
2026-09-03611640,923$33.4K78 %199.7K
2026-09-02816252,077$344.6K53 %2.7M
2026-09-01914548,492$200.7K74 %668.2K
2026-08-31914745,629$103.3K73 %649.6K
2026-08-30912545,890$68.6K71 %432.7K
2026-08-291013445,862$92.7K75 %791.9K
2026-08-281012439,517$67.6K70 %409.5K
2026-08-271212935,736$72.7K57 %390.2K
2026-08-261222548,011$354.7K52 %1.2M
2026-08-251326053,085$637.0K47 %3.1M
2026-08-241321841,998$158.2K57 %1.4M

Per UTC day, summed over every Primaries series that has statistics for that day, from every trade print of every contract in our tick archive. Trades and USD turnover are exact; contracts traded, buy share and L2 (order-book) updates exist for days captured with the extended statistics — earlier days show —.

Biggest contracts

Most traded Primaries contracts on 2026-09-22

The single event contracts with the most USD turnover on the newest captured day — with open and close price and the outcome implied by the last print.

ContractSeriesVenueOpen → CloseImplied outcomeTradesTurnover
KXPRESNOMR-28-JDVRepublican Primary winnerKalshi0.450 → 0.440open65$23.9Kbuy file →
KXPRESNOMD-28-KHDemocratic Primary winnerKalshi0.076 → 0.071open206$6.7Kbuy file →
KXPRESNOMD-28-JOSSDemocratic Primary winnerKalshi0.170 → 0.170open118$6.0Kbuy file →
KXPRESNOMD-28-AOCDemocratic Primary winnerKalshi0.150 → 0.150open98$4.1Kbuy file →
KXPRESNOMD-28-ABDemocratic Primary winnerKalshi0.037 → 0.038open32$2.8Kbuy file →
KXPRESNOMD-28-MKDemocratic Primary winnerKalshi0.040 → 0.040open20$2.0Kbuy file →
KXPRESNOMD-28-GNDemocratic Primary winnerKalshi0.140 → 0.140open107$2.0Kbuy file →
KXPRESNOMR-28-MRRepublican Primary winnerKalshi0.210 → 0.200open33$1.3Kbuy file →
KXPRESNOMR-28-TCRepublican Primary winnerKalshi0.018 → 0.018No6$1.1Kbuy file →
KXPRESNOMD-28-JBPDemocratic Primary winnerKalshi0.020 → 0.020No33$585.93buy file →

Single contracts ranked by USD turnover on 2026-09-22 (UTC), from every trade print in our tick archive. Prices quote 0..1; the implied outcome reads the last print of the day (≥ 0.97 Yes/Up, ≤ 0.03 No/Down) — venues publish the official result. Each contract’s day file is sold individually, the whole series day as a bundle.

36 series · 5.73 GB

Kalshi Primaries series

Largest archive first. Each series page lists its exact coverage, day count and recent days; day bundles are bought in the shop calendar.

SeriesVenueIntervalDaysCoverageSizePrice/day
Vote percentages in primariesKalshievent174April 2026 – present883 MB€1Buy days
Democratic Primary winnerKalshievent203March 2026 – present861 MB€1Buy days
Florida Primary WinnersKalshievent169March 2026 – August 2026665 MB€1Buy days
Primary margins of victoryKalshievent170April 2026 – present657 MB€1Buy days
Who will advance in the CA primary?Kalshievent114March 2026 – July 2026486 MB€1Buy days
Republican Primary winnerKalshievent203March 2026 – present329 MB€1Buy days
ny 12 democratic primaryKalshievent113March 2026 – June 2026152 MB€1Buy days
Election place in primariesKalshievent135April 2026 – August 2026149 MB€1Buy days
Tennessee Primary WinnersKalshievent150March 2026 – August 2026147 MB€1Buy days
GA Primary WinnersKalshievent86March 2026 – June 2026147 MB€1Buy days
Louisiana Primary WinnersKalshievent203March 2026 – present145 MB€1Buy days
Turnout in primariesKalshievent147April 2026 – present143 MB€1Buy days
AK primaryKalshievent182March 2026 – September 2026116 MB€1Buy days
Missouri Primary WinnersKalshievent79May 2026 – August 202698.6 MB€1Buy days
Michigan Primary WinnersKalshievent80May 2026 – August 202687.1 MB€1Buy days
Wisconsin Primary WinnersKalshievent86May 2026 – August 202686.5 MB€1Buy days
Massachusetts 6 Democratic primaryKalshievent183March 2026 – September 202680.9 MB€1Buy days
Massachusetts Primary WinnersKalshievent107May 2026 – September 202665.2 MB€1Buy days
Washington Primary AdvancersKalshievent87May 2026 – August 202658.2 MB€1Buy days
Texas Primary WinnersKalshievent100March 2026 – June 202657.8 MB€1Buy days
New York Primary WinnersKalshievent62April 2026 – June 202648.0 MB€1Buy days
Ohio Primary WinnersKalshievent57March 2026 – May 202644.2 MB€1Buy days
Maryland Primary WinnersKalshievent109March 2026 – June 202641.3 MB€1Buy days
Indiana Primary WinnersKalshievent64March 2026 – May 202637.4 MB€1Buy days
Alabama Primary WinnersKalshievent137March 2026 – August 202633.9 MB€1Buy days
Counties won in primariesKalshievent131April 2026 – August 202632.5 MB€1Buy days
Virginia Primary WinnersKalshievent79May 2026 – August 202630.2 MB€1Buy days
Kentucky Primary WinnersKalshievent53March 2026 – May 202628.5 MB€1Buy days
CA Gov: Exact placeKalshievent43May 2026 – July 202625.3 MB€1Buy days
Nevada Primary WinnersKalshievent83March 2026 – June 202624.9 MB€1Buy days
Connecticut Primary WinnersKalshievent86May 2026 – August 202624.4 MB€1Buy days
New Jersey Primary WinnersKalshievent81March 2026 – June 202623.7 MB€1Buy days
Minnesota Primary WinnersKalshievent86May 2026 – August 202622.7 MB€1Buy days
Illinois Primary winnersKalshievent21February 2026 – March 202615.1 MB€1Buy days
Libertarian Primary winnerKalshievent169April 2026 – present14.9 MB€1Buy days
First Primary democratsKalshievent165March 2026 – August 202610.9 MB€1Buy days
Why CryptoStruct

Why buy Primaries prediction-market data here

Four things every page on this site is built on — and the reason the numbers above exist at all.

We record everything

The complete public feed of each venue as it was published: every Level-2 snapshot and update at the venue's full book depth, every trade with its aggressor side, every quote, funding, mark-price and liquidation event — for every instrument the venue lists, every UTC day since we added the venue. Nothing sampled, no top-N cut, no on-demand capture.

Institutional grade

Captured co-located at the venue with the exchange timestamp and our receive timestamp in integer nanoseconds, an event-id chain that makes any gap visible, and one normalized schema across 35+ venues — the same capture our own high-frequency trading engine and enterprise feeds run on.

€1 per instrument-day

Any instrument-day is €1, series-day bundles start at €1 — no subscription, no minimum order, no tiers to unlock. Credit packs lower the effective price and never expire, and every venue has free full-day samples to test against first.

Self-service for everyone

Pick the days in the Data Shop, pay by card as a guest and download immediately — no sales call, no enterprise contract, no KYC. Coding agents buy the same files through the MCP server, and the free Agent Skill teaches them the format.

FAQ

Primaries prediction-market data — FAQ

Does Kalshi have primary election markets?

Yes — per-state primary winner and advancer series (Florida, Texas, Ohio, Illinois, Indiana, Washington, California), vote-percentage markets and primary margins of victory.

How is primary-election prediction data sold?

One purchase covers every contract of the series for one UTC day — every trade print and the complete Level-2 book per contract, captured co-located with nanosecond timestamps — €1 per series-day, bought as a guest with instant download.

How far back does the Primaries data go?

Coverage runs February 2026 – present — 4,197 series-days across 36 series on Kalshi. Each series page lists its exact span.

Can I get Primaries prediction-market data as CSV or Parquet?

Yes — trades export as gzipped CSV or Parquet at no extra cost, with integer microsecond UTC timestamps that load straight into pandas, polars or DuckDB. Kalshi records full order-book depth without a separate BBO stream, so book data ships in the native tick file — the free reader script converts it locally. See the formats overview.

How much does Primaries prediction-market data cost?

€1 per series-day bundle — every contract of the series for that UTC day — no subscription, no minimum order. Pick days in the shop calendar, pay as a guest, download immediately.

Do I need an account or a sales call?

No. Pick the Primaries series-days in the Data Shop, pay by card as a guest and download immediately — no subscription, no minimum order, no KYC, no enterprise contract, no sales call. Coding agents buy the same bundles through the MCP server.

How is the Primaries data captured?

Co-located at the venue, message by message: every Level-2 update and every trade print carries the exchange timestamp and our receive timestamp in integer nanoseconds, an event-id chain makes any gap visible, and one normalized schema across 35+ venues means a parser written for Binance reads these files unchanged. It is the same capture our own high-frequency trading engine runs on — nothing sampled, no top-N cut.

What was the busiest Primaries trading day?

2026-08-18 — $1.3M of USD turnover over 16,550 trades in a single series-day. Since our statistics began on 2026-07-08, 20 Primaries series recorded 2,104,458 trades and $14.1M in total; the biggest single contract was KXPRIMARYPLACE-SCRSENS26-1-DGRA on 2026-08-11 at $616.5K. Tuesdays are the busiest weekday at about $202.3K per day.

More topics

Other prediction-market topics

Midterms, House & SenatePolitics2028 Presidential ElectionPoliticsTrump AdministrationPoliticsSupreme Court & CongressPoliticsWorld Elections & LeadersPoliticsGeopoliticsPoliticsNBASportsWNBASportsNFLSportsMLB & BaseballSportsNHLSportsCollege FootballSportsCollege BasketballSportsSoccerSportsFIFA World CupSportsPremier LeagueSportsUEFA Club CompetitionsSportsBundesligaSportsLa LigaSportsLiga MXSportsMLS & US SoccerSportsSouth American SoccerSportsTennisSportsTable TennisSports