Who came first where: Tweede Kamer elections by gemeente, 1937–2025

About this map

Which party got the most votes in each gemeente, at every Tweede Kamer election from 1937 to 2025 for which results per gemeente are complete. Each colour is a party; a patch is every gemeente where that party came first, drawn on the gemeente borders of that election year (so you also see the many mergers: about 1,056 gemeenten in 1937, 342 today). How the colours were chosen • Each party gets its own colour where it has one (Wikipedia infobox or party brand). • When two parties' colours were close, the older party keeps it and the newer party gets a shade of it (e.g. SDAP keeps red; CPN, PvdA, SP and GL-PvdA get darker, lighter or crimson-rose reds; CHU keeps dark blue, so PVV becomes a darker navy and NSC a steel blue). • Parties without an established colour (RKSP, KVP and a few small ones) get a colour no other party on the map uses. • GroenLinks-PvdA has two colours (green and red); red is used because the greens belong to the older D66 and GroenLinks. Legend • ARP (Anti-Revolutionaire Partij): teal — tops at least one gemeente in 10 of the 25 elections • SDAP (Sociaal-Democratische Arbeiderspartij): red — tops at least one gemeente in 1 of the 25 elections • VDB (Vrijzinnig-Democratische Bond): charcoal (no established party colour, so one nobody else uses) — tops at least one gemeente in 1 of the 25 elections • CHU (Christelijk-Historische Unie): dark blue — tops at least one gemeente in 10 of the 25 elections • CPN (Communistische Partij van Nederland): dark red (red is SDAP's, which is older) — tops at least one gemeente in 13 of the 25 elections • SGP (Staatkundig Gereformeerde Partij): orange — tops at least one gemeente in 23 of the 25 elections • LSP (Liberale Staatspartij): peach (no established party colour, so one nobody else uses) — tops at least one gemeente in 1 of the 25 elections • RKSP (Roomsch-Katholieke Staatspartij): purple (no established party colour, so one nobody else uses) — tops at least one gemeente in 1 of the 25 elections • CDU (Christelijk-Democratische Unie): mauve (no established party colour, so one nobody else uses) — tops at least one gemeente in 1 of the 25 elections • NSB (Nationaal-Socialistische Beweging): olive (no established party colour, so one nobody else uses) — tops at least one gemeente in 1 of the 25 elections • KVP (Katholieke Volkspartij): ochre (no established party colour, so one nobody else uses) — tops at least one gemeente in 9 of the 25 elections • PvdA (Partij van de Arbeid): light red (red and dark red belong to the older SDAP and CPN) — tops at least one gemeente in 20 of the 25 elections • PvdV (Partij van de Vrijheid): blue — tops at least one gemeente in 1 of the 25 elections • VVD: bright ultramarine (dark blue and blue belong to the older CHU and PvdV) — tops at least one gemeente in 23 of the 25 elections • GPV (Gereformeerd Politiek Verbond): brown (no established party colour, so one nobody else uses) — tops at least one gemeente in 3 of the 25 elections • BP (Boerenpartij): plum (no established party colour, so one nobody else uses) — tops at least one gemeente in 1 of the 25 elections • D66: green — tops at least one gemeente in 3 of the 25 elections • SP (Socialistische Partij): raspberry crimson (the reds belong to the older SDAP and PvdA) — tops at least one gemeente in 4 of the 25 elections • CDA: sea green — tops at least one gemeente in 14 of the 25 elections • GL (GroenLinks): light green (green belongs to the older D66) — tops at least one gemeente in 1 of the 25 elections • CU (ChristenUnie): sky blue — tops at least one gemeente in 3 of the 25 elections • LPF (Lijst Pim Fortuyn): yellow — tops at least one gemeente in 1 of the 25 elections • PVV (Partij voor de Vrijheid): very dark navy (dark blue belongs to the older CHU) — tops at least one gemeente in 6 of the 25 elections • GL-PvdA (GroenLinks-PvdA): rose red (the party uses green and red; the reds and greens belong to older parties) — tops at least one gemeente in 2 of the 25 elections • NSC (Nieuw Sociaal Contract): steel blue (the dark blues belong to the older CHU and PVV) — tops at least one gemeente in 1 of the 25 elections Notes • Exact ties (about 20 cases over 90 years, mostly tiny gemeenten such as Katwoude or Muiden) go to the party that was larger nationally. • No complete per-gemeente data was available for 1918, 1922, 1925, 1929, 1933 and 1989, so those elections are not shown; the map jumps from 1986 to 1994. • Areas without a separate result are left blank: the Noordoostpolder in 1946–1948, the Zuidelijke IJsselmeerpolders in 1967–1971, and five gemeenten missing from the 1946 and 1952 source data. • Several 2025 gemeenten were decided by a handful of votes (in Albrandswaard PVV and VVD were level in the preliminary count); the map follows the Kiesraad's final count. • Borders are simplified (about 100–350 m) for a country-wide view. Sources: election results 1937–1986 from the Historische Database Nederlandse Gemeenten (HDNG, IISG/NLGIS); 1994–2017 from the Kiesraad's verkiezingsuitslagen.nl; 2021, 2023 and 2025 from the Kiesraad's official result files (EML/CSV). Gemeente borders 1937–1994 from O.W.A. Boonstra's NLGis shapefiles (via gemeentekaart-core), 1998–2025 from CBS/PDOK (via cartomap).

Text version: https://www.movingpolygons.com/map/chrisjager/who-came-first-where-tweede-kamer-elections-by-gemeente-19372025.md