First-past-the-post and its effects
This page explains why winning more votes nationwide does not necessarily produce more parliamentary seats, using the 2013 general election (GE13) as a case study.
First-past-the-post means that Malaysia elects one MP in each constituency, and the candidate with the most valid votes there wins the seat. It is therefore a constituency-by-constituency system, rather than one that assigns seats from a national party vote total.
GE13, held on 5 May 2013, makes this easy to see. PR received 5,623,984 votes, or 50.87%, while BN received 5,237,699 votes, or 47.38%. Yet BN won 133 of the 222 parliamentary seats and PR won 89.
Those results meant BN held about 59.9% of seats with 47.38% of the vote, while PR held about 40.1% of seats with 50.87% of the vote. A House majority required 112 seats, so BN’s 133 seats gave it a parliamentary majority. Najib Razak was sworn in as Prime Minister on 6 May 2013.
Constituency boundaries matter because each constituency elects one person. The Constitution calls for elector numbers within a state to be approximately equal, but it also permits area weightage for rural constituencies. That rule can affect how many voters are represented by a single seat, although the GE13 totals alone do not show why each boundary had its particular shape.
There is debate about the explanation for the GE13 gap. Ostwald’s research emphasised malapportionment and found evidence consistent with partisan bias, while other academic work found both ethnic and urban effects in the distribution of seats. The agreed starting point is the result itself: in a system that awards seats locally, a nationwide vote lead does not automatically create a parliamentary-seat majority.
That is the answer. Everything below is the working: each claim the explanation rests on, labelled with how certain it is and linked to where it came from. You can stop here.
The working
What the sources say
20 claims, 20 of them carrying a linked source. Each one shows how certain it is — that label is written in the knowledge base alongside the claim, not decided here.
How to read the labels
- established
- multiple independent reliable sources, and uncontested.
- contested
- reliable sources disagree, or official and independent accounts differ.
- uncertain
- genuinely unknown at the time of writing.
How the system works
established
Under section 13(1) of the Elections Act 1958, the candidate with the greatest number of valid votes in a constituency is elected; the law does not require that candidate to receive more than half of the votes.
established
Malaysia uses a first-past-the-post system for elections, under which each parliamentary constituency returns one MP.
established
The Federal Constitution provides that the Federation is divided into constituencies for House of Representatives elections and that one member is elected for each constituency.
established
Because seats are decided constituency by constituency, a national total of votes is not itself used to allocate Dewan Rakyat seats.
established
The Constitution says the Election Commission must review constituency divisions at intervals of no more than ten and no less than eight years, subject to the constitutional provisions.
established
The Thirteenth Schedule says elector numbers within each constituency in a state should be approximately equal, while allowing a measure of area weightage for rural constituencies because of the difficulties and disadvantages they face.
GE13: votes and seats
established
GE13 for the House of Representatives was held on 5 May 2013.
established
Barisan Nasional (BN) won 133 of the 222 seats at GE13.
established
Pakatan Rakyat (PR) won 89 of the 222 seats at GE13.
established
BN received 5,237,699 votes, or 47.38% of votes recorded in the GE13 parliamentary results.
established
PR received 5,623,984 votes, or 50.87% of votes recorded in the GE13 parliamentary results.
established
BN’s 133 seats were about 59.9% of the 222-seat House, while PR’s 89 seats were about 40.1%; these seat shares differed from their respective vote shares.
established
A simple majority in the 222-seat House is 112 seats, so BN’s 133 seats constituted a House majority.
established
BN retained the federal government after GE13, and Najib Razak was sworn in as Prime Minister on 6 May 2013.
Inter-Parliamentary UnionMalaysia Ministry of Foreign Affairs
established
All 222 elected MPs took their oaths at the first sitting of the Thirteenth Parliament on 24 June 2013.
established
The Constitution provides that the Yang di-Pertuan Agong appoints as Prime Minister a Dewan Rakyat member who, in the Agong’s judgment, is likely to command the confidence of the majority of House members.
uncertain
Published models produce different GE13 counterfactual outcomes because they make different assumptions about electoral rules, districting, party labels and vote transfers; their estimates are model results, not GE13’s single “true” alternative outcome.
uncertain
No adjudicated finding or documentary record was identified proving that a specified GE13 boundary was drawn with partisan intent; analyses may describe partisan effects, but should not state intent as established.
established
Published research decomposes Malaysian partisan bias using stated models, including electorate size, party vote distribution and turnout, while other work models multi-cornered contests; these are model-dependent estimates rather than a single authoritative allocation of the entire GE13 vote-seat gap.
What is still argued over
Where reliable sources disagree
These are set out side by side, with each position attributed to whoever holds it. No winner is picked.
contested
Political scientist Kai Ostwald argued that Malaysia’s electoral institutions, particularly malapportionment, were responsible for turning BN’s popular-vote deficit in GE13 into a parliamentary-seat majority; he reported that his analysis indicated a partisan element to that malapportionment.
contested
Jason Wei Jian Ng, Gary John Rangel, Santha Vaithilingam and Subramaniam S. Pillay reported that both ethnic and urban effects helped explain the distribution of parliamentary seats in GE13; this is a different emphasis from accounts that chiefly attribute the result to constituency size and boundaries.
The 2013 Malaysian Elections: Ethnic Politics or Urban Wave?PDF version
contested
The Oxford International Journal of Constitutional Law described the lack of fixed numerical ratios in the Thirteenth Schedule, together with first-past-the-post, as producing the GE13 outcome in which BN polled 47% in an essentially two-party contest and secured 60% of seats.
Malaysia: The state of liberal democracyFederal Constitution of Malaysia
contested
Ramesh Rajaratnam of Transparency International Malaysia argued after GE13 that unequal constituency sizes and the electoral system created major distortions between votes and seats; this was an advocacy assessment, not a court finding.
uncertain
The claim that particular constituency boundaries were intentionally designed to favour a party is an allegation requiring evidence of intent; the GE13 vote-and-seat totals alone do not establish intent.
Still being researched
What this page does not yet know
Open questions the research has not closed. They are published rather than hidden, so you can see the edge of what is checked.
- How do the stated assumptions of published models affect their estimates of the respective roles of first-past-the-post, constituency size differences, geographic concentration of support, and three- or multi-cornered contests in the GE13 vote-seat gap?