Template:LSSP election results
Year Legislature Party leader Seats won Change in seats Votes Percentage of votes Vote swing
1947 1st House of Representatives Leslie Goonewardene & N. M. Perera 10 / 95 10 204,020 10.81% 10.81%
1952 2nd House of Representatives Leslie Goonewardene & N. M. Perera 9 / 95 1 305,133 13.11% 2.3%
1956 3rd House of Representatives Leslie Goonewardene & N. M. Perera 14 / 95 5 274,204 10.36% 2.75
1960 ( March ) 4th House of Representatives Leslie Goonewardene & N. M. Perera 10 / 151 4 325,286 10.70% 0.34%
1960 ( July ) 5th House of Representatives Leslie Goonewardene & N. M. Perera 12 / 151 2 224,995 7.31% 3.39%
1965 6th House of Representatives Leslie Goonewardene & N. M. Perera 10 / 151 2 302,095 7.47% 0.16%
1970 7th House of Representatives Leslie Goonewardene & N. M. Perera 19 / 151 9 433,224 8.68% 1.21%
1977 1st National State Assembly Leslie Goonewardene & N. M. Perera 0 / 151 19 225,317 3.61% 5.07%
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