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Federal elections were held in Switzerland on 26 October 1975.^[1] The Social Democratic Party emerged as the largest party in the National Council, winning 55 of the 200 seats.^[2] As of 2023, this is the last time turnout has reached 50% in a federal election.

Results

National Council

Party		Votes	%	Seats	+/–
	Social Democratic Party	480,396	24.87	55	+9
	Free Democratic Party	428,919	22.21	47	–2
	Christian Democratic People's Party	407,286	21.09	46	+2
	Swiss People's Party	192,053	9.94	21	–2
	Alliance of Independents	117,217	6.07	11	–2
	Republican Movement	57,192	2.96	4	–3
	National Action	47,796	2.47	2	–2
	Liberal Democratic Union	47,256	2.45	6	0
	Swiss Party of Labour	45,799	2.37	4	–1
	Evangelical People's Party	37,959	1.97	3	0
	Swiss Progressive Organisations	19,173	0.99	0	0
	Federal Democratic Union	6,717	0.35	0	–
	Autonomous Socialist Party	6,706	0.35	1	+1
	Independent Social-Christian Party	2,883	0.15	0	0
	Vaud People's Movement for the Environment	1,246	0.06	0	–
	Other parties	32,789	1.70	0	–
Total		1,931,387	100.00	200	0
Valid votes		1,931,387	98.75
Invalid/blank votes		24,353	1.25
Total votes		1,955,740	100.00
Registered voters/turnout		3,735,037	52.36
Source: Nohlen & Stöver

By constituency

Council of the States

Party		Seats	+/–
	Christian Democratic People's Party	17	0
	Free Democratic Party	15	0
	Swiss People's Party	5	0
	Social Democratic Party	5	+1
	Liberal Democratic Union	1	–1
	Alliance of Independents	1	0
Total		44	0
Source: Nohlen & Stöver