Tips & Tricks: Single Transferable Vote

September 6, 2011

Updated: March 10th, 2026

The Single Transferable Vote (STV) system is a unique approach to elections that gives every voter’s preference weight in determining results. If you’re wondering how STV works in practice or how to handle single transferrable votes effectively, this guide offers clear STV voting tips to help voters and administrators navigate the process.

STV combines preferential voting with proportional representation, meaning that votes are transferred according to voter preferences until all seats are filled. It’s used in several countries, including Ireland, Australia, and local elections in the UK, as well as in organizational contexts like the Academy Awards. Learning how to manage ballots and tally votes properly is essential for ensuring a fair outcome and maintaining voter confidence.

STV offers several advantages, making it a popular choice in both governmental and organizational elections:

  • Provides independent and minority candidates a fair chance
  • Ensures that every vote counts and treats every voter equally
  • Encourages more representative outcomes than simple plurality systems

However, STV is also more complex:

  • Requires a higher degree of numeracy and literacy to understand and tally votes
  • Can create internal competition within parties, as candidates from the same party compete for votes

How STV Works

The process for determining winners under STV is as follows:

  1. Quota achievement: Any candidate who reaches or exceeds the required quota of votes is declared elected.
  2. Transferring surplus votes: If a candidate receives more votes than necessary, their surplus votes are transferred to the next preference indicated by voters.
  3. Elimination of lowest candidate: If no candidate reaches the quota, the candidate with the fewest votes is eliminated, and their votes are transferred to remaining candidates based on preferences.
  4. Repeat until complete: This process continues until all seats are filled or until the number of remaining candidates equals the number of available seats.

Handling Surplus Votes

When a candidate exceeds the required number of votes, the surplus votes are redistributed. Several methods determine which votes get transferred:

MethodHow It WorksExample
CincinnatiRandomly selects surplus votes from all votes received (original + transferred)Candidate X has 220 votes, quota is 200. 20 surplus votes are randomly drawn from all 220
GregoryAll votes are proportionally scaled based on second preferences to match the surplusCandidate X has 220 votes, with 40% for X, 30% for Z, 30% for A → 12 votes to X, 9 to Z, 9 to A
HareSurplus votes are drawn in the order received, only from the newly transferred votesCandidate X receives 30 votes from candidate Y; 20 are transferred in the order received, original 190 votes remain untouched

Practical STV Voting Tips

  • Ensure ballots clearly allow voters to rank candidates in order of preference.
  • Double-check tallies when transferring votes to prevent errors.
  • Familiarize yourself with the method your organization uses (Cincinnati, Gregory, or Hare).
  • Use digital election platforms like ElectionBuddy to automate surplus transfers and reduce errors.

STV can feel complex at first, but understanding the basics of preferential voting and surplus transfers makes it manageable for both voters and administrators. By applying these STV voting tips and knowing how to handle single transferrable votes, organizations can run fair, transparent elections that truly reflect voter preferences. 

Modern platforms like ElectionBuddy simplify this process, automating calculations, reducing errors, and ensuring every vote counts. This helps elections run smoothly and with confidence!

Join 11,984+ organizations like yours that use ElectionBuddy to build more easy online elections

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