Table of voting systems by nation
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These tables deal with voting to select candidates for office, not for the passing of legislation.
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Single-winner voting systems by country
Multiple-winner voting systems by country
Key
- Seats per district
- Most elections are split into a number of districts (for example, a constituency). In some elections, there is one person elected per district. In others, there are many people elected per district.
- Total number of seats
- the number of representatives elected to the body in total.
- Election threshold
- see Election threshold
- FPTP
- First-past-the-post electoral system
- Party list
- One of many Party-list proportional representation systems. Where possible, this has been replaced by the allocation system used within the party-list (e.g. d'Hondt method)
- Parallel voting
- This means that two simultaneous systems are used to elect representatives to the same body. If there is interchange between the two systems (e.g. the number elected in one system affects the number elected in the other) then this is called the additional member system.
Footnotes
- Note 1: The state of Louisiana uses runoff voting for all House and Senate seats. All candidates run on a single ballot in the general election; if a candidate receives a majority of the vote, he or she is automatically elected. Otherwise, the top two finishers go to a runoff election, held approximately a month later, with the winner in the runoff earning the seat.
- Note 2: The Ceann Comhairle or Speaker of Dáil Éireann is returned automatically for whichever constituency s/he was elected if they wish to seek re-election, reducing the number of seats contested in that constituency by one. (In that case, should the Ceann Comhairle be from a three-seater, only two seats are contested in the general election from there.) As a result, if the Ceann Comhairle wishes to be in the next Dáil, only 165 seats are actually contested in a general election.
- Note 3: As of October 2004, New Zealand uses STV in 9 out of 79 councils. Each city can have more than one ward, or district.
- Note 4: All 18 district councils in Hong Kong combined.
- Note 5: Determined for the 2005 parliamentary elections based on the 2001 census data. Independent candidates need to gather votes equal to the total number of votes cast in the constituency divided by the number of local seats. The remaining seats are distributed among parties by the d'Hondt method applied to the total number of votes for each. Party lists are one per constituency, the seats each party wins are forther distributed among its local lists again by d'Hondt applied to local numbers of votes for the party, and a mechanism of shifting seats from one local party list to another, to adjust the total seats for all parties for each constituency to the allocated local number of seats (minus the number of successful local independent candidates).
See also
References
Much of the data on Bulgaria from Central electoral committee (http://www.is-bg.net/cik2005/news.php?id=30&sub=3m) - "Methods for determining the number of mandates in constituencies and the results of the vote" (in Bulgarian)
Much of the data regarding which voting system is used is drawn from this 2002 report (http://www.idea.int/esd/data/world.cfm) from the Institute for Democracy and Electoral Assistance.
Much of the data regarding the size of the parliaments comes from this 1997 report (http://www.idea.int/publications/esd/english/esd_english_part2.pdf) from the same Institute.
Some of the data has been updated since then.