1958 Trimontonian general election

Party		Votes	%	Seats	+/–
	Democratic Centre	1,676,729	34.87	129	-26
	Radical Party	1,456,702	30.30	109	-24
	Socialist Party	957,843	19.92	72	+30
	Liberal Party	423,275	8.80	32	+2
	People's Party	240,671	5.01	18	+18
	Independent Radicals	43,457	0.90	0	New
	others	9,547	0.20	0	–
Total		4,808,224	100.00	360	0
Valid votes		4,808,224	99.97
Invalid/blank votes		1,377	0.03
Total votes		4,809,601	100.00
Registered voters/turnout		5,204,165	92.42