Introduction
Proportional Representation by Single Transferable Vote is an electoral system designed to ensure that seats in a legislative body are allocated in proportion to the votes received by candidates or parties.
It combines two principles
- Proportional representation
- Preferential voting
This system allows voters to rank candidates in order of preference and ensures that votes are not wasted.
Constitutional Context in India
The Constitution of India provides for the use of Proportional Representation by Single Transferable Vote in specific elections, including
- Election of members of the Rajya Sabha
- Election of members of State Legislative Councils
- Election of the President
- Election of the Vice President
In these cases, the system ensures fair representation of political parties in proportion to their strength in the electoral college.
Core Features
Preferential Voting
Voters rank candidates as first preference, second preference, third preference and so on.
Quota System
A minimum number of votes, known as the quota, is required for a candidate to be elected.
The most commonly used formula is the Droop Quota
Quota equals Total Valid Votes divided by Number of Seats plus one, plus one.
Transfer of Surplus Votes
If a candidate receives more votes than the quota, the surplus votes are transferred to other candidates based on second preferences.
Elimination and Transfer
If no candidate reaches the quota, the candidate with the lowest votes is eliminated. Their votes are transferred to remaining candidates according to next preferences.
This process continues until all seats are filled.
Objectives
- Ensure proportional representation of political parties
- Minimise vote wastage
- Reflect diversity of political opinion
- Promote consensus-based representation
Advantages
Fair Representation
Smaller parties and minority groups get representation in proportion to their electoral support.
Reduced Wasted Votes
Votes are transferred rather than discarded.
Encourages Moderation
Candidates may seek broader appeal to gain second or third preference votes.
Limitations
Complex Counting Process
The method of calculating quotas and transferring votes is procedurally complex.
Less Direct Accountability
In large multi-member constituencies, the link between voter and representative may weaken.
Time-Consuming
Counting and redistribution require careful tabulation.
Comparison with First-Past-the-Post
Under the First-Past-the-Post system, the candidate with the highest number of votes wins, even if they do not secure majority support.
In contrast, Proportional Representation by Single Transferable Vote aims to reflect overall voter preference and proportional strength.
Significance in India
The use of this system in indirect elections ensures balanced party representation and prevents domination by a single party beyond its numerical strength.
It strengthens the federal and representative character of institutions such as the Rajya Sabha.
Conclusion
Proportional Representation by Single Transferable Vote is a sophisticated electoral mechanism that blends proportionality with voter choice. By allowing vote transfer and ensuring proportional outcomes, it promotes fairness, inclusivity and representational balance within democratic institutions.
