Cover image via SAYSIn Malaysia, your vote is counted based on where you are registered to vote, not simply where you work, study, rent, or spend most of your time.
Your registered voting area determines which parliamentary seat you vote in during a general election, and which state seat, or DUN seat, you vote in during a state election. These areas are called constituencies.
This guide explains what constituencies are, how parliamentary and DUN seats work, why boundaries matter, why your constituency may not match the city name you use every day, and how your voting area can change even if you have not moved.
The quick answer
| Question | Short answer |
|---|---|
| What is a constituency? | A voting area that elects one representative |
| What is a parliamentary seat? | A constituency that elects one Member of Parliament, or MP |
| What is a DUN seat? | A constituency that elects one State Assemblyperson, or ADUN |
| How do I know my constituency? | Check MySPR Semak when your voter details are available |
| Why does my seat not match my city? | Electoral boundaries do not always follow city, district, or council names |
| Can my constituency change without me moving? | Yes, if boundaries are redrawn or your registered address details change |
| Why do some seats have more voters? | Constituencies are not always equal in voter size |
| Who draws constituency boundaries? | The Election Commission reviews and recommends electoral boundaries under the Federal Constitution |
What is a constituency in Malaysia?
A constituency is the election area you belong to as a voter.
In Malaysia, voters are grouped into election areas called constituencies, or bahagian pilihan raya. Each constituency has its own voters, candidates, result and elected representative.
In most states, one parliamentary constituency contains several DUN constituencies. This means voters in the same parliamentary seat vote for the same MP, but they may vote for different ADUNs depending on which DUN seat they belong to. However, voters in the same DUN seat usually vote for both the same ADUN and the same MP, because that DUN seat sits within a parliamentary constituency.
For example, two people may both say they live in Shah Alam, but they may not necessarily vote in the same parliamentary or DUN seat. Electoral boundaries do not always match everyday city, township or local council names.
Federal Territories such as Kuala Lumpur, Putrajaya and Labuan are different because they do not have DUN seats. Voters there vote for parliamentary seats only.
What is a parliamentary seat?
A parliamentary seat is a single-member constituency that elects one Member of Parliament.
Malaysia's Dewan Rakyat currently has 222 Members of Parliament, with each MP representing a parliamentary constituency.
During a general election, voters in each parliamentary seat choose from the candidates contesting that seat. The candidate with the most votes wins and becomes the MP for that constituency.
Parliamentary seats matter because they decide who represents voters at the federal level, and because the total number of seats won by parties and coalitions affects who can form the federal government.
What is a state seat or DUN seat?
A state seat is a single-member constituency that elects one State Assemblyperson, or ADUN.
State seats are used in state elections. The candidate who wins a DUN seat becomes the ADUN for that constituency.
State seats matter because they decide who represents voters at the state level, and because DUN seat results affect who can form the state government.
Federal Territories such as Kuala Lumpur, Putrajaya, and Labuan do not have State Legislative Assemblies, so voters there vote for parliamentary seats but not DUN seats.
What is the difference between a parliamentary seat and a DUN seat?
A parliamentary seat elects an MP for the federal level, while a DUN seat elects an ADUN for the state level.
A parliamentary seat is linked to the Dewan Rakyat. A DUN seat is linked to the State Legislative Assembly.
| Type of seat | Representative elected | Level |
|---|---|---|
| Parliamentary seat | Member of Parliament, or MP | Federal |
| State seat / DUN seat | State Assemblyperson, or ADUN | State |
In most states, a parliamentary seat contains several DUN seats. This means your MP and ADUN may represent overlapping but different electoral areas.
How do you know which parliamentary and DUN seat you belong to?
The easiest way to check your parliamentary and DUN seat is through MySPR Semak.
Your voting constituency is tied to your registered voter details, not simply the city, town, district, workplace, university, or rented home you personally identify with.
To check your seat, go to MySPR Semak and enter your MyKad number. When the information is available, the system can show your voter registration details, including your parliamentary seat, state seat, polling centre, voting stream, or saluran, and other polling details.
Do not rely only on memory from the last election. Your polling centre, saluran, or constituency details may change if your registered address changes, if boundaries are redrawn, or if polling arrangements are updated.
Check MySPR Semak again closer to polling day so you are using the latest details.
Why your constituency may not match the city you live in
Your constituency name does not always follow the city, township, local council, or district name you use every day.
For example, a person may say they live in Shah Alam, Petaling Jaya, Subang Jaya, Klang, or Johor Bahru in everyday life, but their parliamentary or DUN seat may have a different electoral name.
This happens because electoral boundaries are drawn for voting and representation, while city names, postal addresses, districts, mukims, and local council areas serve different administrative purposes.
In simple terms, your city is not always your constituency.
Why do constituency boundaries matter?
Constituency boundaries decide which voters are grouped together to elect one representative.
Boundaries can affect:
- which candidates appear on your ballot
- who becomes your MP or ADUN
- which voters are grouped together in one seat
- how competitive a seat is
- how many voters one representative serves
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This is why boundaries matter during elections. They do not just decide where lines are drawn on a map. They decide how voters are represented.
How are parliamentary and DUN boundaries drawn in Malaysia?
The Election Commission reviews electoral boundaries under the Federal Constitution.
The Election Commission says redelineation, or persempadanan, is one of its responsibilities under Article 113 of the Federal Constitution. The process involves reviewing parliamentary and state electoral boundaries, including information such as the number of electors, available facilities, and transport or communication factors.
The Federal Constitution also provides principles for delimitation. For example, the 13th Schedule says the number of electors in constituencies within a state ought to be approximately equal, while also allowing weightage for rural constituencies because of area, access, and other disadvantages.
In simple terms, boundaries are supposed to balance voter numbers with practical geography, but the result can still produce constituencies of very different sizes.
Can your voting constituency change without you moving?
Yes, your constituency can change even if you have not personally moved.
This can happen if electoral boundaries are redrawn during a redelineation exercise. If the boundary around your area changes, your home may be placed in a different constituency even though your address stays the same.
Your voting seat can also change if your official registered address changes. This is why voters should check MySPR Semak before polling day instead of relying on memory from a previous election.
Why do some constituencies have more voters than others?
Some constituencies have more voters because electoral boundaries do not always produce seats of equal size.
Malaysia's constitution recognises that constituencies within a state should generally have roughly equal numbers of electors, but it also allows rural weightage because rural constituencies can be larger, harder to reach, or face different access issues.
In practice, this means one MP or ADUN may represent far more voters than another MP or ADUN.
For voters, the practical effect is simple: Not every seat carries the same number of voters, even though each seat elects one representative.
What is malapportionment?
Malapportionment happens when constituencies have very unequal numbers of voters.
If one seat has 30,000 voters and another has 150,000 voters, both seats still elect one representative. This means voters in the smaller seat have more representation per voter than voters in the larger seat.
Malapportionment is not the same as simply having rural and urban differences. The issue is whether the size difference between constituencies becomes large enough to affect how equally voters are represented.
What is gerrymandering?
Gerrymandering refers to drawing electoral boundaries in a way that benefits one political side or weakens another.
It is different from malapportionment.
Malapportionment is about unequal voter numbers between seats. Gerrymandering is about how voters are grouped together within boundaries.
A simple way to understand it:
| Term | What it means |
|---|---|
| Malapportionment | Seats have very different numbers of voters |
| Gerrymandering | Boundaries are drawn in a way that may favour one side |
Both issues can affect election outcomes, but they are not the same problem.
Can two people in the same city vote in different seats?
Yes. Two people in the same city can vote in different parliamentary or DUN seats.
This happens because cities and constituencies do not always share the same boundaries.
A large city may contain several constituencies. A constituency may also cover areas across different townships, suburbs, or local administrative areas.
This is why your friend may live in the same city as you but vote in a different parliamentary seat or DUN seat.
Can two people in the same constituency have different ADUNs?
Usually, voters in the same parliamentary seat may still belong to different DUN seats.
In most states, one parliamentary constituency contains several state constituencies. That means voters in the same parliamentary seat may vote for the same MP but different ADUNs.
This is normal because parliamentary and DUN boundaries are related but not identical in function.
Why does your constituency matter after the election?
Your constituency determines who represents you after polling day.
After the election, your MP represents your parliamentary constituency in the Dewan Rakyat. Your ADUN, if you have one, represents your state constituency in the DUN.
They are not only campaign figures. They are the elected representatives for your area.
For more detailed explainers, read:
- What Does Your MP Actually Do?
- What Does Your ADUN Actually Do?
How to read a constituency result on election night
A constituency result tells you who won that specific seat, not who won the whole election.
When a result is announced, look at:
- the seat name
- the winning candidate
- the party or coalition
- total votes for each candidate
- majority size
- voter turnout
- rejected ballots
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A candidate wins the seat by getting the most votes in that constituency. The majority is the vote gap between the winner and the runner-up.
This is why a party can win many individual seats even if it does not win the highest popular vote nationwide.
What is a marginal seat?
A marginal seat is a constituency that is won by a small majority.
For example, if a candidate wins by a few hundred votes, the seat may be considered marginal because a small swing in support could change the result in the next election.
Marginal seats often receive more attention because parties believe they can be won or lost more easily.
Frequently asked questions
What is a constituency in Malaysia?
A constituency is a voting area that elects one representative. A parliamentary constituency elects an MP, while a state constituency elects an ADUN.
What is another word for constituency in Malaysia?
In Malay, a constituency is commonly called bahagian pilihan raya.
How do I check my constituency?
Check your voter details through MySPR Semak. The service can show voter registration and polling-related details, including Parliament and state assembly information when available.
Is my constituency based on where I live now?
It is based on your registered voter details, which are tied to your official address record. If you moved but did not update your address and voter details, your voting constituency may still reflect your old address.
Why is my constituency different from my city?
Electoral boundaries do not always follow city, district, local council, postal, or township boundaries.
Why do some constituencies have more voters than others?
Because boundaries are not drawn only by voter numbers. Geography, access, rural weightage, and redelineation history can also affect constituency size.
What is the difference between malapportionment and gerrymandering?
Malapportionment is about unequal voter numbers between seats. Gerrymandering is about how boundaries are drawn in a way that may favour one political side.
Does every Malaysian voter have a DUN seat?
No. Voters in Federal Territories such as Kuala Lumpur, Putrajaya, and Labuan vote for parliamentary seats but not DUN seats because Federal Territories do not have State Legislative Assemblies.
Can one parliamentary seat contain several DUN seats?
Yes. In most states, one parliamentary constituency contains several DUN constituencies.
Related election guides
- How Malaysian Constituencies Work: Parliamentary Seats, DUN Seats, Boundaries, And Why Your Vote Is Counted Where It Is
- What Does Your MP Actually Do?
- What Does Your ADUN Actually Do?
- Why Do Some Constituencies Have More Voters Than Others?
- Why Is My Voting Constituency Different From My City?
Last updated: 1 September 2026guides
