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The single transferable vote (STV) or proportional-ranked choice voting (P-RCV) [a] is a multi-winner electoral system in which each voter casts a single vote in the form of a ranked ballot. Voters have the option to rank candidates, and their vote may be transferred according to alternative preferences if their preferred candidate is ...
The single transferable vote (STV) is a proportional representation system and ranked voting rule that elects multiple winners. Under STV, an elector's vote is initially allocated to their first-ranked candidate. Candidates are elected (winners) if their vote tally exceeds the electoral quota.
The vote counting under STV is actually simpler than primaries, which are no longer necessary if STV is used. [3] As with all voting systems, even if PR-STV is understood, areas of controversy surrounding its use remain. PR-STV is a form of proportional representation so issues relating to that form of electing also impacts acceptance of STV ...
Counting votes under STV is more complicated than first-past-the-post voting, but the following example shows how the vote count is performed and how proportionality is achieved in a district with 3 seats. In reality, districts usually elect more members than that in order to achieve more proportional results.
Historically, the single transferable vote (STV) electoral system has seen a series of relatively modest periods of usage and disusage throughout the world; however, today it is seeing increasing popularity and proposed implementation as a method of proportional representation and a goal of electoral reform. STV has been used in many different ...
A Canadian example of such an opportunity is seen in the City of Edmonton (Canada), which went from first-past-the-post voting in 1917 Alberta general election to five-member plurality block voting in 1921 Alberta general election, to five-member single transferable voting in 1926 Alberta general election, then to FPTP again in 1959 Alberta ...
Like EAR, STV satisfies proportionality for solid coalitions. However, EAR allows weak rankings, whereas STV works only with strict rankings. Moreover, EAR has better candidate monotonicity properties. This addressed an open question by Woodall, [4] who asked if there are rules with the same political properties as STV, which are more monotonic.
The following election has 3 seats to be filled by single transferable vote. There are 4 candidates: George Washington, Alexander Hamilton, Thomas Jefferson, and Aaron Burr. There are 102 voters, but two of the votes are spoiled. The total number of valid votes is 100, and there are 3 seats.