Tick-by-tick trades and L2 order-book depth for 9 Supreme Court & Congress series on Kalshi — Next Supreme Court justice (KXSCOURT), SCOTUS confirmations, bills signed into law, congressional testimony, congress trades, VP tie-break votes, next DNC chair, Senate leadership. 1,581 series-days covering March 2026 – September 2026; 1.3K trades · $7.0K turnover in the 30 days to 2026-09-02. Sold as day bundles from €1.
Next SCOTUS justice, confirmations and resignations, bills becoming law, congressional testimony and trades, VP tie-breaks, party leadership.
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.
Ranked by USD turnover from our own daily statistics — the series a market maker or bot builder should start with.
| # | Series | Venue | Trades (30d) | Turnover (30d) | Days | |
|---|---|---|---|---|---|---|
| 1 | Bills become law this year? | Kalshi | 467 | $3.6K | 23 | Buy days |
| 2 | Next SCOTUS justice | Kalshi | 548 | $1.4K | 23 | Buy days |
| 3 | SCOTUS confirmations | Kalshi | 51 | $598.63 | 23 | Buy days |
| 4 | Congress Testify this year? | Kalshi | 72 | $564.61 | 23 | Buy days |
| 5 | Who will win the next Senate Democratic Leader election? | Kalshi | 52 | $516.48 | 23 | Buy days |
| 6 | Fed governor nominee | Kalshi | 30 | $267.43 | 23 | Buy days |
| 7 | Congress trades | Kalshi | 19 | $18.4 | 23 | Buy days |
| 8 | Next DNC chair? | Kalshi | 58 | $15.87 | 23 | Buy days |
| 9 | VP tiebreaks | Kalshi | 0 | $0 | 23 | Buy days |
Trades and USD turnover summed over every contract of the series, from the recorded tick data; 30 days to 2026-09-02. Series without statistics in the window are omitted.
Largest archive first. Each series page lists its exact coverage, day count and recent days; day bundles are bought in the shop calendar.
| Series | Venue | Interval | Days | Coverage | Size | Price/day | |
|---|---|---|---|---|---|---|---|
| Bills become law this year? | Kalshi | annual | 185 | March 2026 – September 2026 | 127 MB | €1 | Buy days |
| Next SCOTUS justice | Kalshi | event | 185 | March 2026 – September 2026 | 85.9 MB | €1 | Buy days |
| Congress trades | Kalshi | annual | 185 | March 2026 – September 2026 | 56.7 MB | €1 | Buy days |
| Fed governor nominee | Kalshi | event | 185 | March 2026 – September 2026 | 33.7 MB | €1 | Buy days |
| Congress Testify this year? | Kalshi | annual | 185 | March 2026 – September 2026 | 31.4 MB | €1 | Buy days |
| SCOTUS confirmations | Kalshi | event | 185 | March 2026 – September 2026 | 23.7 MB | €1 | Buy days |
| Next DNC chair? | Kalshi | event | 101 | May 2026 – September 2026 | 21.0 MB | €1 | Buy days |
| Who will win the next Senate Democratic Leader election? | Kalshi | event | 185 | March 2026 – September 2026 | 15.9 MB | €1 | Buy days |
| VP tiebreaks | Kalshi | event | 185 | March 2026 – September 2026 | 14.7 MB | €1 | Buy days |
Yes — next justice, confirmations and resignation series, plus congressional markets: bills becoming law, testimony, member trades, VP tie-breaks, the next DNC chair, Senate Democratic leader and Fed-governor nominations.
One purchase covers every contract of a series for one UTC day — tick-by-tick trades plus Level-2 order-book updates per contract — typically €1 per series-day.
Coverage runs March 2026 – September 2026 — 1,581 series-days across 9 series on Kalshi. Each series page lists its exact span.
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.
Typically €1 per series-day bundle — every contract of the series for that UTC day, with invoice on checkout. Pick days in the shop calendar.