This by-election was held to fill the seat vacated by PAP Member of Parliament, N. Govindasamy, upon his demise in February. To prevent a three-corner fight that would split the non-PAP vote, opposition parties came to an agreement to have only one opposition candidate - WP chief J. B. Jeyaretnam - to go for the contest. An independent candidate was disqualified at the close of nominations for having his name absent from the electoral register.

Writ of election: 26 April 1977 [Tue]
Nomination day: 4 May 1977 [Wed]
Polling day: 14 May 1977 [Sat]
Member swearing-in: 27 May 1977 [Fri]

Total voters: 18,418
Total voter turnout: 17,415 (94.6%)

Election deposit: $1,200

RESULTS

Radin Mas

Total seats = 1