The Bundestagswahl 2025 results (kerg2), one row per area × group × ballot.
query filters client-side by area level/name, party/group, and ballot.
The structural data (Strukturdaten) per Wahlkreis — ~50 demographic/economic
columns exposed as a key→value map, for the 299 constituencies. The file
also carries the official summary rows — 16 "Land insgesamt" (numbered 901–916)
and one national "Insgesamt" (999). They are dropped by default, since this
command is per-Wahlkreis, but includeAggregates keeps them: they are the
authoritative Land/Bund figures, and they cannot be reconstructed by summing
Wahlkreise (for the city states several columns repeat one city-wide value, so
a sum double-counts — see the rows' own Fußnoten). Optionally filtered by
Wahlkreis number (leading zeros ignored) or name substring.
The constituencies (Wahlkreise), optionally filtered by Land (name/abbr/number).
The parties / groups reference list (btw25_parteien).