Radin Mas Single Member Constituency

The Radin Mas Single Member Constituency is a single-member constituency (SMC) in central Singapore. It is managed by Tanjong Pagar Town Council.^[1] The current Member of Parliament (MP) for the constituency is Melvin Yong from the governing People's Action Party (PAP).

Radin Mas
Single Member constituency for the Parliament of Singapore
Region	Central Region, Singapore
Electorate	25,567
Current constituency
Created	1976; 49 years ago (1976)
Seats	1
Party	People's Action Party
Member	Melvin Yong
Town Council	Tanjong Pagar
Merged	1988; 37 years ago (1988)
Merged to	Tiong Bahru GRC
Reformed	2011; 14 years ago (2011)
Reformed from	Tanjong Pagar GRC

History

Radin Mas Constituency was created in 1976; Govindasamy Naidu from the PAP won 75.65% of the vote.^[2] Bernard Chen retained the constituency in one of two by-elections in 1977 after Naidu died.^[3] The PAP would continue to retain the constituency in the 1980 and 1984 general elections.^[4][5]

In the 1988 general election, with the creation of group representation constituencies (GRCs), Radin Mas Constituency was abolished and made part of the three-member Tiong Bahru GRC.^[6]

For the 2011 general election, Radin Mas Single Member Constituency was carved from Tanjong Pagar GRC, where it had previously been a division.^[7][a] Sam Tan, the incumbent PAP MP for the Radin Mas division, won the SMC with 67.1% of the vote against Yip Yew Weng from the National Solidarity Party (NSP).^[7][9]

In the 2015 general election, blogger Han Hui Hui ran as an independent candidate for the constituency. She won 10.03% of the vote, losing her election deposit of S$14,500 in the process for not winning at least 12.5% of the vote. Tan, on the other hand, retained the SMC with an improved 77.25% of the vote in a three-cornered fight.^[10][11]

Prior to the 2020 general election, Tan retired from politics. Melvin Yong, the incumbent MP for the Moulmein–Cairnhill division in Tanjong Pagar GRC, was fielded by the PAP to retain the SMC;^[12] he won 74.01% of the vote against Kumar Appavoo from the Reform Party (RP), who had been contesting the SMC since 2015.^[13][14]

In the 2025 general election, another three-cornered fight occurred in Radin Mas SMC after Darryl Lo, an independent candidate, ran in the constituency, claiming that there was no "credible opposition" in the constituency.^[15] He won 23.52% of the vote, while Appavoo, now under the banner of the coalition People's Alliance for Reform (PAR), lost his $13,500 deposit with 7.36% of the vote. Yong won reelection with 69.12% of the vote.^[14][16]

Member of Parliament

Year	Member	Party
Formation
1976	N. Naidu Govindasmy		PAP
1977	Bernard Chen
1980	Mohamed Kassim Abdul Jabbar
1984	Chng Hee Kok
Constituency abolished (1988 – 2011)
2011	Sam Tan		PAP
2015
2020	Melvin Yong
2025

Electoral results

Note : Elections Department Singapore do not include rejected votes for calculation of candidate's vote share. Hence, the total of all candidates' vote share will be 100%.

Elections in 1970s

General Election 1976

Party		Candidate	Votes	%	±%
	PAP	N. Naidu Govindasmy	13,246	75.7	N/A
	WP	Othman bin Abdullah	4,263	24.3	N/A
Majority			8,983	51.4	N/A
Turnout			17,879	97.1	N/A
	PAP win (new seat)

By-election 1977: Radin Mas

Party		Candidate	Votes	%	±%
	PAP	Bernard Chen	12,053	70.6	5.1
	WP	J.B. Jeyaretnam	5,021	29.4	5.1
Majority			7,032	41.2	10.2
Turnout			17,415	94.6	2.5
	PAP hold		Swing	5.1

Elections in 1980s

General Election 1980

Party		Candidate	Votes	%	±%
	PAP	Mohamed Kassim Abdul Jabbar	11,335	64.1	6.5
	WP	Wong Hong Toy	6,356	35.9	6.5
Majority			4,979	28.2	13.0
Turnout			18,115	96.1	1.5
	PAP hold		Swing	6.5

General Election 1984

Party		Candidate	Votes	%	±%
	PAP	Chng Hee Kok	9,997	54.0	10.1
	WP	Wong Hong Toy	8,519	46.0	10.1
Majority			1,478	8.0	20.2
Turnout			18,846	95.3	0.8
	PAP hold		Swing	10.1

Elections in 2010s

General Election 2011

Party		Candidate	Votes	%	±%
	PAP	Sam Tan	18,609	67.1	N/A
	NSP	Yip Yew Weng	9,123	32.9	N/A
Majority			9,486	34.2	N/A
Turnout			28,401	91.2	N/A
	PAP win (new seat)

General Election 2015

Party		Candidate	Votes	%	±%
	PAP	Sam Tan	20,230	77.25	10.15
	RP	Kumar Appavoo	3,329	12.71	N/A
	Independent	Han Hui Hui	2,629	10.04	N/A
Majority			16,901	64.54	30.34
Rejected ballots			768	2.85	-
Turnout			26,956	93.25	2.05
	PAP hold		Swing	10.15

Elections in 2020s

General Election 2020^[17]

Party		Candidate	Votes	%	±%
	PAP	Melvin Yong	16,864	74.01	3.24
	RP	Kumar Appavoo	5,922	25.99	13.28
Majority			10,942	48.02	16.52
Total valid votes			22,786	96.53
Rejected ballots			818	3.47
Turnout			23,604	94.68	1.43
Registered electors			24,931
	PAP hold		Swing	3.24

General Election 2025^[18]

Party		Candidate	Votes	%	±%
	PAP	Melvin Yong	15,854	69.12	4.89
	Independent	Darryl Lo	5,394	23.52	N/A
	PAR	Kumar Appavoo	1,689	7.36	18.63
Majority			10,460	45.60	2.42
Total valid votes			22,937	98.09	1.56
Rejected ballots			446	1.91	1.56
Turnout			23,383	91.46	3.22
Registered electors			25,567		2.55
	PAP hold		Swing	4.89

Notes

1. Tanjong Pagar GRC replaced Tiong Bahru GRC upon the latter's abolition in 1991.^[8]