OptionalareaMatch an area by number (leading zeros ignored) or case-insensitive name
substring. Land and Wahlkreis numbers overlap, so combine with areaType.
OptionalareaRestrict to one area level.
OptionalgroupRestrict to a gruppenart (e.g. "Partei").
OptionalpartyMatch a group/party by case-insensitive name substring.
OptionalvoteRestrict to first (1) or second (2) votes.
Filters for a results query (all optional; applied client-side after the fetch).