See main article: 1965 Kerala Legislative Assembly election. |- style="background-color:#E9E9E9; text-align:center;"! class="unsortable" |! Political Party !! Seats
Contested !! Won !! Net Change
in seats !! % of
Seats! Votes !! Vote % !! Change in
vote % |- | | style="text-align:left;" |Indian National Congress| 133 || 36 || 27 || 27.07 || 21,23,660 || 33.55 || 0.87|-| | style="text-align:left;" |Communist Party of India| 79 || 3 || 28 || 2.26 || 525,456 || 8.3 || 30.84|- | | style="text-align:left;" |Communist Party of India (Marxist)| 73 || 40 || New || 30.08 || 1,257,869 || 19.87 || New|- | | style="text-align:left;" |Kerala Congress| 54 || 23 || New || 17.29 || 796,291 || 12.58 || New|-| | 16 || 6 || 5 || 4.51 || 242,529 || 3.71 || 1.29|- | | style="text-align:left;" |Samyukta Socialist Party| 29 || 13 || New || 9.77 || 514,689 || 8.13 || New|-| | 174 || 12 || 7 || 9.02 || 869,843 || 13.74 || N/A|- class="unsortable" style="background-color:#E9E9E9"! colspan = 2|! style="text-align:center;" |Total Seats !! 133 (0) !! ||Voters !! 6,330,337 !! style="text-align:center;" ||}