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Social choice theory is a branch of welfare economics that extends the theory of rational choice to collective decision-making. [1] Social choice studies the behavior of different mathematical procedures (social welfare functions) used to combine individual preferences into a coherent whole.
Research shows that citizens vote for the candidate that they believe is most compatible with their moral convictions and religious values. [13] Traditional conceptions of class voting dictate a working-class preference towards left-leaning parties and middle-class preference for right-leaning parties. The influences of class voting is reliant ...
In democracies and other representative governments, citizens vote for the political actors who will represent them. Some scholars argue that political polarization reflects the public's ideology and voting preferences. [37] [50] [51] [52] Dixit and Weibull (2007) claim that political polarization is a natural and regular phenomenon. Party ...
So, a voter might vote for Alice, Bob, and Charlie, rejecting Daniel and Emily. Approval voting uses such multiple votes. In a voting system that uses a ranked vote, the voter ranks the candidates in order of preference. For example, they might mark a preference for Bob in the first place, then Emily, then Alice, then Daniel, and finally Charlie.
In a transferable-vote system like the single transferable vote (STV) or instant runoff voting (IRV), a ballot is initially allocated to the first-preference candidate but if the first preference candidate is elected or found to be un-electable, the vote may be transferred one or more times to successively lower preferences.
These correspond to preferences for which there is a Condorcet winner. [33] Holliday and Pacuit devised a voting system that provably minimizes the number of candidates who are capable of spoiling an election, albeit at the cost of occasionally failing vote positivity (though at a much lower rate than seen in instant-runoff voting).
Preferential voting or preference voting (PV) may refer to different election systems or groups of election systems: Any electoral system that allows a voter to indicate multiple preferences where preferences marked are weighted or used as contingency votes (any system other than plurality or anti-plurality )
Some voting rules are difficult to explain to voters in a way they can intuitively understand, which may undermine public trust in elections. [8] [failed verification] For example, while Schulze's rule performs well by many of the criteria above, it requires an involved explanation of beatpaths. Ease of voting.