| By-election | Nomination Day | Polling Day |
|---|---|---|
| 2016 (Bukit Batok) |
27 Apr 2016 | 7 May 2016 |
| 2013 (Punggol East) |
16 Jan 2013 | 26 Jan 2013 |
| 2012 (Hougang) |
16 May 2012 | 26 May 2012 |
| 1992 (Marine Parade) |
9 Dec 1992 | 19 Dec 1992 |
| 1981 (Anson) |
21 Oct 1981 | 31 Oct 1981 |
| 1979 (Anson, Geylang West, Mountbatten, Nee Soon, Potong Pasir, Sembawang, Telok Blangah) |
31 Jan 1979 | 10 Feb 1979 |
| 1977 (Bukit Merah) |
13 Jul 1977 | 23 Jul 1977 |
| 1977 (Radin Mas) |
4 May 1977 | 14 May 1977 |
| 1970 (Delta, Havelock, Kampong Kapor, Ulu Pandan, Whampoa) |
8 Apr 1970 | 18 Apr 1970 |
| 1967 (Bukit Panjang, Havelock, Jalan Kayu, Tampines, Thomson) |
24 Feb 1967 | 7 Mar 1967 |
| 1966 (Bukit Timah, Joo Chiat, Jurong) |
2 Nov 1966 | Uncontested |
| 1966 (Chua Chu Kang, Crawford, Paya Lebar) |
1 Mar 1966 | Uncontested |
| 1966 (Bukit Merah) |
8 Jan 1966 | 18 Jan 1966 |
| 1965* (Hong Lim) |
30 Jun 1965 | 10 Jul 1965 |
| 1961* (Anson) |
10 Jun 1961 | 15 Jul 1961 |
| 1961* (Hong Lim) |
11 Mar 1961 | 29 Apr 1961 |
| 1957* (Cairnhill, Tanjong Pagar) |
18 May 1957 | 29 Jun 1957 |
* Legislative Assembly By-elections
Find out how votes are counted here.