Which election do these figures come from?

The 2023 federal National Council election (FSO). It is each municipality's share of valid party votes.

National ranking · Data 2023 · Source: BFS

The SP strongholds in Switzerland (2023)

Fontenais (JU) is the strongest SP stronghold in Switzerland: 46.3% vote share in the 2023 National Council election. Next come Berolle (39.4%) and Chavannes-près-Renens (39%). Source: FSO.

Top 100

BFS · NRW 2023 · 2023

Rank	Municipality	SP strength	Canton	Residents
1	Fontenais	46.3%	JU	1'645
2	Berolle	39.4%	VD	300
3	Chavannes-près-Renens	39%	VD	10'720
4	Courchapoix	37.9%	JU	456
5	Bern	37.7%	BE	138'562
6	Haute-Sorne	36.9%	JU	7'532
7	Le Chenit	36.8%	VD	4'787
8	Birsfelden	36.7%	BL	10'401
9	Evionnaz	36.5%	VS	1'535
10	Delémont	36.4%	JU	12'991
11	Champtauroz	36.3%	VD	184
12	Renens	36%	VD	21'793
13	Schaffhausen	35.9%	SH	39'228
14	Courrendlin	35.9%	JU	3'737
15	Lajoux	34.5%	JU	712
16	Prévonloup	34.3%	VD	247
17	Mervelier	34.2%	JU	523
18	Saubraz	33.8%	VD	441
19	Le Noirmont	33.8%	JU	1'936
20	Saignelégier	33.8%	JU	2'528
21	Basel	33.7%	BS	180'097
22	Biel/Bienne	33.6%	BE	57'462
23	Prilly	33.2%	VD	13'037
24	Zurich	33%	ZH	440'935
25	Münchenstein	32.8%	BL	12'662
26	Lausanne	32.8%	VD	145'596
27	Bussigny	32.4%	VD	12'120
28	Rodersdorf	32%	SO	1'398
29	Buckten	31.9%	BL	719
30	Ecublens	31.5%	VD	13'747
31	Courroux	31.5%	JU	3'439
32	Yverdon-les-Bains	31.2%	VD	30'590
33	Porrentruy	31.2%	JU	6'597
34	Coeuve	31.1%	JU	720
35	Ziefen	31%	BL	1'740
36	Clarmont	31%	VD	232
37	Romanel-sur-Lausanne	30.8%	VD	4'320
38	Cronay	30.8%	VD	433
39	Les Breuleux	30.8%	JU	1'631
40	Lucens	30.7%	VD	4'879
41	Croy	30.7%	VD	408
42	Courtételle	30.5%	JU	2'784
43	Moiry	30.4%	VD	295
44	Neuhausen am Rheinfall	30.2%	SH	12'198
45	Boécourt	30.2%	JU	953
46	Fribourg	30%	FR	39'599
47	Frenkendorf	30%	BL	6'756
48	Ennetbaden	30%	AG	3'801
49	Corsier-sur-Vevey	30%	VD	3'459
50	Bex	29.9%	VD	8'933
51	Cheyres-Châbles	29.8%	FR	2'545
52	Sainte-Croix	29.8%	VD	5'156
53	Courgenay	29.7%	JU	2'463
54	Cheseaux-sur-Lausanne	29.6%	VD	4'861
55	Le Lieu	29.6%	VD	924
56	Chippis	29.6%	VS	1'627
57	Corcelles-près-Concise	29.5%	VD	439
58	Val Terbi	29.4%	JU	3'240
59	Roche	29.3%	VD	2'039
60	Vevey	29.3%	VD	20'147
61	Val-de-Travers	29.3%	NE	10'710
62	Allschwil	29.2%	BL	22'374
63	Cossonay	29.1%	VD	4'968
64	Morges	29.1%	VD	17'803
65	Nidau	29%	BE	7'160
66	Liestal	29%	BL	16'081
67	Crissier	29%	VD	11'101
68	Payerne	29%	VD	10'938
69	Cugy	28.9%	VD	2'814
70	Préverenges	28.9%	VD	5'222
71	Lausen	28.8%	BL	5'996
72	Cudrefin	28.8%	VD	1'915
73	Lucerne	28.7%	LU	86'699
74	Pratteln	28.7%	BL	16'595
75	Treycovagnes	28.7%	VD	519
76	Develier	28.7%	JU	1'397
77	Muttenz	28.5%	BL	18'308
78	Rossemaison	28.5%	JU	767
79	Saint-Imier	28.4%	BE	5'144
80	Aarau	28.4%	AG	22'932
81	Orbe	28.4%	VD	8'005
82	Morlon	28.3%	FR	790
83	Châtillon	28.2%	FR	549
84	La Sarraz	28.2%	VD	2'608
85	Romainmôtier-Envy	28.2%	VD	579
86	L'Abbaye	28.2%	VD	1'604
87	La Neuveville	28.1%	BE	3'781
88	Villars-sur-Glâne	28.1%	FR	12'644
89	Aigle	28%	VD	12'050
90	Courtedoux	28%	JU	749
91	Winterthur	27.9%	ZH	120'741
92	Villeneuve	27.9%	VD	6'061
93	Les Clées	27.9%	VD	195
94	Masein	27.8%	GR	538
95	Bever	27.7%	GR	627
96	Mollens	27.6%	VD	320
97	Mont-la-Ville	27.6%	VD	503
98	Epalinges	27.6%	VD	9'860
99	Denges	27.6%	VD	1'842
100	Moudon	27.5%	VD	6'827

sd-t-17.02-NRW2023 2023 · Federal Statistical Office (FSO), retrieved 31.08.2026

How we measure this

BFS · NRW 2023

SP vote share in the 2023 National Council election per municipality, from the FSO election statistics. The share refers to valid party votes.

Aargau Basel-City Basel-Landschaft Bern Fribourg Geneva Glarus Grisons Jura Lucerne Neuchâtel Schaffhausen Schwyz Solothurn St. Gallen Thurgau Ticino Valais Vaud Zug Zurich

Frequently asked questions

Which election do these figures come from?: The 2023 federal National Council election (FSO). It is each municipality's share of valid party votes.