Kit Library / Social Studies / Civics & Government
⚡ Topic Learning KitShared by a Veda learner · Generated with Veda AI
Veda Bites are swipeable micro-lessons — each one teaches exactly one idea. The bites below come from this kit — swipe through them in the app.
💡 Key Idea
One vote, many choices, fair results.
Single Transferable Vote (STV) is a proportional representation system where voters rank candidates by preference. Instead of just picking one, you order candidates from favorite to least favorite. If your top choice is eliminated or already has enough votes, your vote transfers to your next preference. Thi…
↳ STV makes every vote count by letting it move to your next choice.
⚙️ Process
Follow the vote transfers step by step.
↳ STV repeats transfer and elimination until every seat is decided.
➗ Formula
How many votes do you need to win?
↳ The quota ensures no more winners than seats.
✏️ Example
A small example makes it clear.
Imagine 100 voters electing 2 seats. Quota = floor(100/3)+1 = 34. Candidates A, B, C, D run.
↳ Surplus and eliminated votes flow to other candidates.
⚖️ Comparison
How STV differs from simple plurality.
↳ STV aims for proportional representation, unlike FPTP.
🌍 Real World
Real places, real elections.
↳ STV is used in several countries for fair representation.
⚠️ Common Mistake
Don't stop at your favorite.
↳ Rank more to keep your vote alive.
💡 Key Idea
Extra votes don't go to waste.
When a candidate exceeds the quota, the surplus (votes above quota) is transferred to the next preferences on those ballots. This ensures that as many votes as possible help elect someone.
↳ Surplus votes are redistributed, not discarded.
🎯 Exam Tip
Quota is the key number.
In exams, always calculate the quota first. Then track transfers carefully. Practice with small numbers to avoid mistakes.
↳ Quota calculation is the first step in any STV problem.
❓ Did You Know
A system with a long history.
STV was invented independently by Thomas Hare in England and Carl Andræ in Denmark in the 1850s. It has been used for over 150 years.
↳ STV is a time-tested electoral method.
Think of choosing a menu.
Imagine a group ordering pizzas. Everyone ranks toppings. If the most popular choice is already ordered, your vote goes to your next favorite topping. This way, the final order reflects everyone's preferences as much as possible.
↳ STV is like ranking your pizza toppings to get a fair mix.
Honest ranking is the best strategy.
In STV, you don't need to worry about 'wasting' your vote. Rank candidates in your true order of preference. There's no advantage to strategic voting.
↳ Vote your true preferences in STV.
The Single Transferable Vote (STV) is a proportional representation electoral system where voters rank candidates by preference. Votes are transferred from surplus or eliminated candidates to ensure every vote helps elec…
Full explanation, worked examples & memory tricks in the app
All 19 questions, laddered from warm-up to topper-level, each with its answer and the reasoning behind it.
Q1. What is the primary goal of the Single Transferable Vote (STV) system?
BeginnerA · To achieve proportional representation in multi-member districts
STV is designed to produce proportional representation in multi-member districts, ensuring that the distribution of seats reflects the distribution of votes among parties or groups.
Q2. In STV, what is a 'quota'?
BeginnerB · The minimum number of votes a candidate needs to be elected
The quota is the minimum number of votes required for a candidate to be elected. A common formula is the Droop quota: (total valid votes / (seats + 1)) + 1.
Q3. Which of the following is a key feature of STV?
BeginnerC · Voters rank candidates in order of preference
STV uses preferential voting: voters rank candidates in order of preference (1, 2, 3, etc.). This ranking enables the transfer of votes.
Q4. STV is typically used in which type of electoral district?
BeginnerC · Multi-member districts
STV requires multi-member districts to achieve proportionality. Each district elects multiple representatives, allowing for a more proportional outcome.
Q5. In STV, what is the first step in the counting process?
BeginnerA · Count first-preference votes
The counting process begins by counting all first-preference votes. Then the quota is calculated, and candidates who reach the quota are elected.
Q6. STV is a form of proportional representation.
BeginnerA · True
STV is designed to produce proportional outcomes, where the share of seats roughly matches the share of votes for each party or group.
Q7. How are surplus votes of an elected candidate transferred in STV?
IntermediateD · They are transferred to the next preferred candidate on the ballot papers
Surplus votes (votes above the quota) are transferred to the next preferred candidate on each ballot paper, ensuring that votes are not wasted and that the proportionality is maintained.
Q8. What happens to the votes of a candidate who is eliminated in STV?
IntermediateD · They are transferred to the next preferred candidate on each ballot
When a candidate is eliminated, their votes are transferred to the next preferred candidate on each ballot paper who is still in the race, ensuring that votes continue to influence the outcome.
Q9. What is the Droop quota formula?
IntermediateA · (Total votes / (Seats + 1)) + 1
The Droop quota is calculated as (Total valid votes / (Seats + 1)) + 1. This ensures that only the number of candidates equal to the seats can reach the quota.
Q10. In STV, what does 'transferable' refer to?
IntermediateC · The ability of voters to transfer their vote to another candidate if their preferred candidate is elected or eliminated
The 'transferable' aspect means that if a voter's first choice is elected with surplus or eliminated, their vote is transferred to their next preference, so it is not wasted.
Q11. Which of the following is a potential advantage of STV?
IntermediateC · It minimizes wasted votes
STV reduces wasted votes because votes are transferred to other preferred candidates, so even if a voter's first choice loses, their vote can still help elect another candidate.
Q12. What happens if no candidate reaches the quota after the first count?
IntermediateB · The candidate with the fewest votes is eliminated
If no candidate reaches the quota, the candidate with the fewest votes is eliminated, and their votes are transferred to the next preferences. This process continues until all seats are filled.
Q13. Which of the following is a real-world example of STV usage?
IntermediateB · Irish general elections
Ireland uses STV for its general elections to the Dáil (lower house). Other examples include Malta and the Australian Senate.
Q14. What is a potential disadvantage of STV?
IntermediateA · It is complex for voters to understand and count
STV can be complex because voters must rank multiple candidates, and the counting process involves transfers and quotas, which may be difficult for some voters to understand.
Q15. In STV, what is a 'surplus'?
IntermediateC · The number of votes a candidate receives above the quota
A surplus is the excess of votes a candidate receives over the quota. These surplus votes are transferred to other candidates according to the voters' next preferences.
Q16. What is the purpose of transferring surplus votes in STV?
IntermediateB · To ensure that all votes have equal weight
Transferring surplus votes ensures that votes are not wasted and that each vote has as close to equal weight as possible, contributing to proportionality.
Q17. How does STV differ from the Alternative Vote (AV) system?
AdvancedC · STV uses multi-member districts; AV uses single-member districts
AV is used in single-member districts, while STV is used in multi-member districts. Both use preferential voting, but STV aims for proportional representation.
Q18. Which of the following is a necessary condition for STV to work effectively?
AdvancedA · Voters must be able to rank candidates
STV relies on voters ranking candidates in order of preference. Without this, transfers cannot occur, and the system would not function as intended.
Q19. In STV, a candidate can be elected without reaching the quota if all other candidates are eliminated.
AdvancedA · True
In the final round, if only one candidate remains and seats are still open, that candidate is elected even if they haven't reached the quota, because there is no one else to transfer votes to.
18 flashcards in this kit — the app reviews them with spaced repetition so the right card returns on the right day.
Every game is built from this kit's own content — scores feed your mastery, so playing counts as studying.
True False
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Memory Match
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Flashcard Battle
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Speed Quiz
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Sequence Builder
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Revision Battle
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