Single non transferable voting, commonly abbreviated SNTV, is a multi member electoral system in which each voter has exactly one vote even though several representatives are elected from the same district. Voters select one candidate, and after all votes are counted, the candidates with the highest vote totals occupy as many seats as the district has available. If a district elects five representatives, the five highest polling candidates win, while every voter casts only one vote.
The vote is called non transferable because it remains attached to the chosen candidate and is not transferred to another candidate if that candidate fails to win or has more support than necessary. SNTV therefore combines a single vote per elector with a multi member district. This produces an unusual relationship between voter choice and representation because a voter cannot directly support multiple candidates despite several seats being available. The system is candidate centred rather than a proportional party list formula, and the allocation of seats depends on the individual vote totals of candidates.
The mechanics become clear through a simple five seat example. Suppose candidates A through J compete in one constituency and every voter may cast exactly one vote. After counting, candidate A receives 12,000 votes, B receives 10,500, C receives 9,800, D receives 8,900, E receives 8,200, F receives 7,700 and the remaining candidates receive fewer. The five highest candidates A through E are elected.
There is no requirement for a candidate to receive more than fifty percent of the vote because SNTV normally uses plurality ordering among candidates. There is also no second round and no transfer of preferences. A voter supporting candidate F cannot transfer that vote to another candidate merely because F finishes sixth. Similarly, a voter supporting A cannot transfer excess support because A has already accumulated enough votes to win. The system therefore produces several winners from one district while retaining the basic single choice characteristic of plurality voting.
SNTV is particularly distinctive because political parties must consider how many candidates to nominate and how supporters will distribute their votes. Suppose a party has enough support to elect two representatives in a five seat district. If it nominates many candidates and its voters divide their votes among them, no individual candidate may receive enough votes to finish among the top five.
If the party nominates too few candidates, some of its potential support may not be translated into additional seats. Parties may therefore attempt to coordinate nominations and voters. This creates an internal allocation problem that does not occur in the same form under a single member first past the post election. Candidate personal networks can become important because the electoral contest is directly between individuals rather than solely between party lists. Parties may encourage supporters to concentrate on particular candidates to maximise the number of seats won. SNTV consequently gives substantial importance to candidate management, voter coordination and the distribution of support within parties.
The term non transferable distinguishes SNTV from the Single Transferable Vote system, despite the similarity of their names. Under STV, voters normally rank candidates and votes can transfer according to preference rankings when candidates are eliminated or elected with surplus votes. Under SNTV, the voter chooses only one candidate and there is no mechanism for transferring that vote. This distinction is crucial. Both systems can use multi member districts, but their methods for converting ballots into seats are fundamentally different.
SNTV is a plurality based candidate system, while STV is a preferential proportional representation system. SNTV therefore does not normally require a quota because winners are simply the candidates with the highest totals. STV generally requires a quota and a transfer procedure because votes are redistributed to fill multiple seats proportionally. Confusing the two systems can lead to substantial errors when describing how votes are counted, how voters express preferences and how representation is produced.
SNTV can create opportunities for minority representation because a cohesive minority group may need to concentrate its votes behind one candidate rather than compete against a majority group's several candidates. For example, in a five seat district, a geographically or politically cohesive minority that cannot elect five candidates might nevertheless have enough concentrated support to place one candidate among the five highest vote getters.
The result is not guaranteed and depends on the size and distribution of the group, the number of candidates, turnout and the behaviour of other voters. The system therefore has some semi proportional characteristics in practice even though it does not use a proportional formula. Minority representation can be affected by whether groups are geographically concentrated or dispersed and by whether their supporters coordinate effectively. Candidate nomination also matters because a minority group that spreads its votes across several candidates may weaken the chances of any one candidate reaching a winning total.
Historically, SNTV has been used in different countries and institutional contexts, including legislative elections. Its comparative importance comes from the way it combines multi member districts with a single vote. International electoral-system literature classifies SNTV among semi proportional systems, distinguishing it from plurality systems such as block voting and from proportional systems such as list PR and STV.
The system has attracted scholarly attention because it can generate outcomes that differ significantly from both single member plurality and formal proportional representation. It may produce strong candidate competition within parties, encourage personalistic campaigning and make party organisations important in managing candidate nominations. These characteristics can affect legislative behaviour after elections because representatives may owe electoral success partly to personal support networks rather than solely to party labels. The institutional environment, including party discipline, district size and social structure, therefore influences how SNTV functions in practice.
One practical characteristic of SNTV is its relatively straightforward ballot and count. Voters select one candidate, and election administrators rank candidates by total votes until the available seats are filled. There are no preference transfers, no candidate quotas in the normal sense and no proportional allocation calculation. Nevertheless, the simplicity of the count does not mean the political incentives are simple.
Parties must determine how many candidates to nominate, voters may coordinate around particular individuals and candidates may compete against members of their own party as well as candidates from other parties. This can create intraparty competition and may encourage candidates to build personal electoral bases. The absence of transfers also means that a vote for an unsuccessful candidate does not contribute directly to another candidate's total. Consequently, the effective electoral threshold for winning a seat is determined by the overall distribution of votes and the number of competing candidates rather than by a fixed percentage specified in the basic formula.
The defining comparison among SNTV, limited voting and block voting can be expressed through the number of votes available relative to the number of seats. If five seats are available and voters have one vote, the system is SNTV. If voters have two, three or four votes, it is generally limited voting. If voters have five votes and can select five different candidates, it is block voting.
If voters receive several voting units that can be concentrated on one candidate, it is cumulative voting. These systems can therefore be understood as different ways of controlling the relationship between voter choice and district magnitude. SNTV is the most restrictive in terms of the number of candidates an individual voter can support directly. That restriction can create strategic opportunities for minority groups but also means that the distribution of seats may differ substantially from overall party vote shares.
