Condorcet methods
42-532: The Dini government was the 52nd government of the Italian Republic. It was the second and last cabinet of the XII Legislature . It held office from 17 January 1995 to 17 May 1996, a total of 486 days, or 1 year and 4 months. It was the Italian Republic's first Government of Experts , entirely composed of experts and officials from outside Parliament. The government obtained the confidence of
84-410: A snap election . Legislature XII of Italy The Legislature XII of Italy ( Italian : XII Legislatura della Repubblica Italiana ) lasted from 15 April 1994 until 8 May 1996. Its composition was the one resulting from the snap general election of 27 March 1994 . The election was called by President Scalfaro , after he dissolved the houses of Parliament on 16 January 1994. This decision
126-585: A candidate-based PR system, has only rarely been used to elect more than 21 in a single contest. Some PR systems use at-large pooling or regional pooling in conjunction with single-member districts (such as the New Zealand MMP and the Scottish additional member system ). Other PR systems use at-large pooling in conjunction with multi-member districts ( Scandinavian countries ). Pooling is used to allocate leveling seats (top-up) to compensate for
168-475: A few list-PR systems). A country-wide pooling of votes to elect more than a hundred members is used in Angola, for example. Where PR is desired at the municipal level, a city-wide at-large districting is sometimes used, to allow as large a district magnitude as possible. For large districts, party-list PR is often used, but even when list PR is used, districts sometimes contain fewer than 40 or 50 members. STV,
210-480: A number of seats roughly based on its population size (see degressive proportionality ) and in each member state, the election must also be held using a PR system (with proportional results based on vote share). The most widely used families of PR electoral systems are party-list PR, used in 85 countries; mixed-member PR (MMP), used in 7 countries; and the single transferable vote (STV), used in Ireland, Malta,
252-504: Is allocated seats based on its party share. Some party-list PR systems use overall country-wide vote counts; others count vote shares in separate parts of the country and allocate seats in each part according to that specific vote count. Some use both. List PR involves parties in the election process. Voters do not primarily vote for candidates (persons), but for electoral lists (or party lists ), which are lists of candidates that parties put forward. The mechanism that allocates seats to
294-420: Is also randomness – a party that receives more votes than another party might not win more seats than the other. Any such dis-proportionality produced by the district elections is addressed, where possible, by the allocation of the compensatory additional members. (Number of districts won) (party-list PR seats) under MMP MMP gives only as many compensatory seats to a party as they need to have
336-419: Is described here. The mixed-member proportional system combines single member plurality voting (SMP), also known as first-past-the-post (FPTP), with party-list PR in a way that the overall result of the election is supposed to be proportional. The voter may vote for a district candidate as well as a party. The main idea behind MMP is compensation , meaning that the list-PR seat allocation is not independent of
378-456: 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. A risk is that if the number of seats is larger than, for example, 10 seats, the ballot will be so large as to be inconvenient and voters may find it difficult to rank
420-551: Is no need for a single office (e.g. a president, or mayor) to be elected proportionately if no votes are for parties (subgroups). In the European Parliament , for instance, each member state has a number of seats that is (roughly) proportional to its population, enabling geographical proportional representation. For these elections, all European Union (EU) countries also must use a proportional electoral system (enabling political proportional representation): When n % of
462-489: Is not considered to make an electoral system "proportional" the way the term is usually used. For example, the US House of Representatives has 435 members, who each represent a roughly equal number of people; each state is allocated a number of members in accordance with its population size (aside from a minimum single seat that even the smallest state receives), thus producing equal representation by population. But members of
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#1732787581250504-580: Is used with 5-member districts, it is common for successful candidates to receive 16.6 percent of the vote in the district. This produces a high effective threshold in the districts, and the country maintains a very strong two-party system. However, about 4000 voters in a district would be enough to elect a third-party candidate if voters desired but this seldom happens. Conversely, New South Wales, which uses STV to elect its legislative council in 21-seat contests, sees election of representatives of seven or eight parties each time. In this election about 1/22nd of
546-653: The Australian Senate , and Indian Rajya Sabha . Proportional representation systems are used at all levels of government and are also used for elections to non-governmental bodies, such as corporate boards . All PR systems require multi-member election contests, meaning votes are pooled to elect multiple representatives at once. Pooling may be done in various multi-member voting districts (in STV and most list-PR systems) or in single countrywide – a so called at-large – district (in only
588-1133: The Italian Socialist Party , the Italian Communist Party , and the Italian Social Movement . It also marks the official entrance of Silvio Berlusconi in Italian politics. This was the first legislature to apply the new majoritarian electoral system (also known as Mattarellum ), which replaced the proportional system in effect since 1946. Notes Proportional representation Positional voting Cardinal voting Quota-remainder methods Approval-based committees Fractional social choice Semi-proportional representation By ballot type Pathological response Strategic voting Paradoxes of majority rule Positive results Proportional representation ( PR ) refers to any type of electoral system under which subgroups of an electorate are reflected proportionately in
630-543: The 200-seat legislature as large as in the examples that follow, about 67 three-seat districts would be used. Districts with more seats would provide more proportional results – one form of STV in Australia uses a district with 21 members being elected at once. With a larger district magnitude, it is more likely that more than two parties will have some of their candidates elected. For example, in Malta , where STV
672-562: The House are elected in single-member districts generally through first-past-the-post elections : a single-winner contest does not produce proportional representation as it has only one winner. Conversely, the representation achieved under PR electoral systems is typically proportional to a district's population size (seats per set amount of population), votes cast (votes per winner), and party vote share (in party-based systems such as party-list PR ). The European Parliament gives each member state
714-681: The House of Deputies on 25 January 1995 with 302 votes in favour, 39 against and 270 abstentions. It also obtained the confidence of the Senate on 1 February 1995 with 191 votes in favour, 17 against and 2 abstentions. The government collapsed on 11 January 1996. After the fall of the Berlusconi Government , the President of the Republic Oscar Luigi Scalfaro entrusted Lamberto Dini (already Minister of
756-561: The Prime Minister. In May 1995 Mancuso had accused the methods used in the Mani Pulite investigation and asked for disciplinary action against the pool of magistrates who had carried out the investigations. On 30 December 1995 Lamberto Dini resigned, since the government had already achieved the programmatic goals it was tasked by parliament to bring to term. On 16 February 1996, Scalfaro therefore dissolved parliament and called
798-757: The Treasury for the Berlusconi Government) with the task of forming a new cabinet. The new government, composed only of independents, was supported by the Democratic Party of the Left , Northern League , Italian People's Party , Greens , Segni Pact , Democratic Alliance , Italian Socialists and The Network . The parties of the Pole ( Forza Italia National Alliance and Christian Democratic Centre ) announced their intention to abstain from
840-670: The US House of Representatives). Votes and seats often cannot be mathematically perfectly allocated, so some amount of rounding has to be done. The various methods deal with this in different ways, although the difference is reduced if there are many seats – for example, if the whole country is one district. Party-list PR is also more complicated in reality than in the example, as countries often use more than one district, multiple tiers (e.g. local, regional and national), open lists or an electoral threshold . This can mean that final seat allocations are frequently not proportional to
882-433: The absence or insufficient number of leveling seats (in list PR, MMP or AMS) may produce disproportionality. Other sources are electoral tactics that may be used in certain systems, such as party splitting in some MMP systems. Nonetheless, PR systems approximate proportionality much better than other systems and are more resistant to gerrymandering and other forms of manipulation. Proportional representation refers to
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#1732787581250924-412: The candidates determine the winner. This is done using a preferential ballot . The ranking is used to instruct election officials of how the vote should be transferred in case the first preference is marked for an un-electable candidate or for an already elected candidate. Each voter casts one vote and the district used elects multiple members (more than one, usually 3 to 7). Because parties play no role in
966-510: The context of voting systems, PR means that each representative in an assembly is elected by a roughly equal number of voters. In the common case of electoral systems that only allow a choice of parties, the seats are allocated in proportion to the vote tally or vote share each party receives. The term proportional representation may be used to mean fair representation by population as applied to states, regions, etc. However, representation being proportional with respect solely to population size
1008-529: The disproportional results produced in single-member districts using FPTP or to increase the fairness produced in multi-member districts using list PR. PR systems that achieve the highest levels of proportionality tend to use as general pooling as possible (typically country-wide) or districts with large numbers of seats. Due to various factors, perfect proportionality is rarely achieved under PR systems. The use of electoral thresholds (in list PR or MMP), small districts with few seats in each (in STV or list PR), or
1050-504: The elected body. The concept applies mainly to political divisions ( political parties ) among voters. The essence of such systems is that all votes cast – or almost all votes cast – contribute to the result and are effectively used to help elect someone. Under other election systems, a bare plurality or a scant majority are all that are used to elect candidates. PR systems provide balanced representation to different factions, reflecting how votes are cast. In
1092-469: The election are as follows (popular vote). Under party-list PR, every party gets a number of seats proportional to their share of the popular vote. This is done by a proportional formula or method; for example, the Sainte-Laguë method – these are the same methods that may be used to allocate seats for geographic proportional representation (for example, how many seats each states gets in
1134-432: The electorate support a particular political party or set of candidates as their favourite, then roughly n % of seats are allotted to that party or those candidates. All PR systems aim to provide some form of equal representation for votes but may differ in their approaches on how they achieve this. Party-list PR is the most commonly used version of proportional representation. Voters cast votes for parties and each party
1176-450: The example below, the Droop quota is used and so any candidate who earns more than 25 percent of the vote is declared elected. Note that it is only possible for 3 candidates to each achieve that quota. In the first count, the first preference (favourite candidate) marked on each of the ballots is counted. Candidates whose vote tally equals or passes the quota are declared elected as shown in
1218-497: The example below. (first preferences) Next, surplus votes belonging to those already elected, votes the candidates received above the quota (votes that they did not need to be elected), are transferred to the next preference marked by the voters who voted for them. Continuing the example, suppose that all voters who marked first preference for Jane Doe marked John Citizen as their second choice. Based on this, Jane Doe's surplus votes are transferred to John Citizen, John Citizen passes
1260-530: The general principle found in any electoral system in which the popularly chosen subgroups (parties) of an electorate are reflected proportionately in the elected body. To achieve that intended effect, proportional electoral systems need to either have more than one seat in each district (e.g. single transferable vote ), or have some form of compensatory seats (e.g. mixed-member proportional representation apportionment methods ). A legislative body (e.g. assembly, parliament) may be elected proportionally, whereas there
1302-401: The many candidates, although 21 are elected through STV in some elections with no great difficulty. (In many STV systems, voters are not required to mark more choices than desired. Even if all voters marked only one preference, the resulting representation would be more balanced than under single-winner FPTP.) Under STV, an amount that guarantees election is set, which is called the quota . In
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1344-491: The number of seats of each party be proportional. Another way to say this is that MMP focuses on making the outcome proportional. Compare the MMP example to a mixed-member majoritarian system, where the party-list PR seat allocation is independent of the district results (this is also called parallel voting ). There is no compensation (no regard to how the district seats were filled) when allocating party-list seats so as to produce
1386-419: The parties' vote share. The single transferable vote is an older method than party-list PR, and it does not need to formally involve parties in the election process. Instead of parties putting forward ordered lists of candidates from which winners are drawn in some order, candidates run by name, each voter marks preferences for candidates, with only one marked preference used to place the vote, and votes cast for
1428-408: The parties/lists is how these systems achieve proportionality. Once this is done, the candidates who take the seats are based on the order in which they appear on the list. This is the basic, closed list version of list PR. An example election where the assembly has 200 seats to be filled is presented below. Every voter casts their vote for the list created by their favourite party and the results of
1470-511: The party's seats. 81 percent of the voters saw their first choice elected. At least 15 percent of them (the Doe first, Citizen second voters) saw both their first and second choices elected – there were likely more than 15 percent if some "Citizen first" votes gave their second preference to Doe. Every voter had satisfaction of seeing someone of the party they support elected in the district. for candidates of party Under STV, to make up
1512-409: The quota and so is declared elected to the third and last seat that had to be filled. Even if all of Fred Rubble's surplus had gone to Mary Hill, the vote transfer plus Hill's original votes would not add up to quota. Party B did not have two quotas of votes so was not due two seats, while Party A was. It is possible, in realistic STV elections, for a candidate to win without quota if they are still in
1554-528: The results of the district level voting. First-past-the-post is a single winner system and cannot be proportional (winner-takes-all), so these disproportionalities are compensated by the party-list component. A simple, yet common version of MMP has as many list-PR seats as there are single-member districts. In the example it can be seen, as is often the case in reality, that the results of the district elections are highly disproportional: large parties typically win more seats than they should proportionally, but there
1596-421: The running when the field of candidates has thinned to the number of remaining open seats. In this example, the district result is balanced party-wise. No one party took all the seats, as frequently happens under FPTP or other non-proportional voting systems. The result is fair – the most popular party took two seats; the less popular party took just one. The most popular candidates in each party won
1638-402: The vote count, STV may be used for nonpartisan elections, such as the city council of Cambridge, Massachusetts . A large proportion of the votes cast are used to actually elect someone so the result is mixed and balanced with no one voting block taking much more than its due share of the seats. Where party labels are indicated, proportionality party-wise is noticeable. Counting votes under STV
1680-481: The vote in the state is enough to take a seat, and seven or eight parties take at least that many votes, demonstrating a different voting pattern than Malta exhibits. Mixed-member proportional representation combines election of district members with election of additional members as compensatory top-up. Often MMP systems use single-member districts (SMDs) to elect district members. (Denmark, Iceland and Sweden use multi-member districts in their MMP systems.) MMP with SMDs
1722-700: The vote of confidence, while the Communist Refoundation Party voted against. After the split of the United Christian Democrats from the Italian People's Party , the government lost the majority to the Chamber of Deputies. On 19 October 1995, the Senate approved an individual motion of no confidence against Minister of Justice Filippo Mancuso , introduced by the parties supporting the cabinet and endorsed by
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1764-535: Was connected to some major events that permanently changed the shape of Italian internal politics during the beginning of the '90s, such as Tangentopoli and the Mafia trials . This legislature marks the beginning of the so-called "Second Republic" ( Italian : Seconda Repubblica ), characterised by the progressive decline and dismantlement of the traditional parties, such as the Christian Democracy ,
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