Polish parties in the Sejm, 1989–2026
Every party that has held seats in the Sejm since June 1989: its organisational lifespan, its seats (ribbon height proportional to the square root of its seats, solid when in government) and the splits, mergers, transformations and alliance entries that link it to other parties. Hover over a party, a seat ribbon or an arrow for its record; click a party to trace its lineage. The data come from my Polish party tracker.