Next UK by-election announced? is a one-time politics series on Kalshi, with markets like “Will it be reported by Clerk of the Crown in Chancery and the Clerk of the Crown for Northern Ireland that a writ for a UK parliamentary by-election is issued by the relevant Clerk of the Crown before Jan 1, 2028?”. The Kalshi Eye archive lists 10 of its markets and has 13 days of daily Parquet files from October 12, 2026 to October 24, 2026 (903 KB), with every order book change and trade.

Venue: Kalshi, series KXUKBYELECTION
Category: Politics, one-time
Markets: 10 (5 settled, 5 open)
Files: 13 days, October 12, 2026 to October 24, 2026, 903 KB, 92,847 rows
Datasets: Order book (L2, incremental), Order book snapshots (top 10, 1 second), Top of book (every change), Top of book (1-minute bars), Trades

Open Next UK by-election announced? in Markets to see every day and market, then export the days you need. Free sample files of each dataset are on the Kalshi data page.

Reading the files

Every KXUKBYELECTION trade on October 24, 2026, in DuckDB:

SELECT ts_recv, ticker, yes_price, size, taker_side
FROM 'kalshieye-data/trades/date=2026-10-24/series=KXUKBYELECTION/trades-KXUKBYELECTION-2026-10-24.parquet'
ORDER BY ts_recv;

To test a strategy on this series, see How to backtest Kalshi markets.

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Figures through October 24, 2026. All Kalshi series with pages are listed on Kalshi series.