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Voting Theory

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Voting Theory I Hold plurality vote I After election, eliminate weakest candidate(s) I Repeat I Voter checks off every candidate that they approve I One with the most votes wins I Everyone gets one vote I One with the most votes wins I Runoff Elections: I Approval Voting: Review Methods of Voting: I Plurality: I Hold plurality vote I After election, eliminate weakest candidate(s) I Repeat I Voter checks off every candidate that they approve I One with the most votes wins I One with the most votes wins I Runoff Elections: I Approval Voting: Review Methods of Voting: I Plurality: I Everyone gets one vote I Hold plurality vote I After election, eliminate weakest candidate(s) I Repeat I Voter checks off every candidate that they approve I One with the most votes wins I Runoff Elections: I Approval Voting: Review Methods of Voting: I Plurality: I Everyone gets one vote I One with the most votes wins I Voter checks off every candidate that they approve I One with the most votes wins I Hold plurality vote I After election, eliminate weakest candidate(s) I Repeat I Approval Voting: Review Methods of Voting: I Plurality: I Everyone gets one vote I One with the most votes wins I Runoff Elections: I Voter checks off every candidate that they approve I One with the most votes wins I After election, eliminate weakest candidate(s) I Repeat I Approval Voting: Review Methods of Voting: I Plurality: I Everyone gets one vote I One with the most votes wins I Runoff Elections: I Hold plurality vote I Voter checks off every candidate that they approve I One with the most votes wins I Repeat I Approval Voting: Review Methods of Voting: I Plurality: I Everyone gets one vote I One with the most votes wins I Runoff Elections: I Hold plurality vote I After election, eliminate weakest candidate(s) I Voter checks off every candidate that they approve I One with the most votes wins I Approval Voting: Review Methods of Voting: I Plurality: I Everyone gets one vote I One with the most votes wins I Runoff Elections: I Hold plurality vote I After election, eliminate weakest candidate(s) I Repeat I Voter checks off every candidate that they approve I One with the most votes wins Review Methods of Voting: I Plurality: I Everyone gets one vote I One with the most votes wins I Runoff Elections: I Hold plurality vote I After election, eliminate weakest candidate(s) I Repeat I Approval Voting: I One with the most votes wins Review Methods of Voting: I Plurality: I Everyone gets one vote I One with the most votes wins I Runoff Elections: I Hold plurality vote I After election, eliminate weakest candidate(s) I Repeat I Approval Voting: I Voter checks off every candidate that they approve Review Methods of Voting: I Plurality: I Everyone gets one vote I One with the most votes wins I Runoff Elections: I Hold plurality vote I After election, eliminate weakest candidate(s) I Repeat I Approval Voting: I Voter checks off every candidate that they approve I One with the most votes wins . I Candidate gets 1 point if a last preference I Candidate with most points wins I Voter orders candidates from most preferred to least I Candidate gets n points if someone's first preference I Voter orders candidates from most preferred to least I Look at everyone's first choice I If one candidate has > 50%, they win I Otherwise, eliminate candidate with fewest first choice votes I Repeat as necessary I Borda Count: Review Methods of Voting: I Instant Runoff: . I Candidate gets 1 point if a last preference I Candidate with most points wins I Voter orders candidates from most preferred to least I Candidate gets n points if someone's first preference I Look at everyone's first choice I If one candidate has > 50%, they win I Otherwise, eliminate candidate with fewest first choice votes I Repeat as necessary I Borda Count: Review Methods of Voting: I Instant Runoff: I Voter orders candidates from most preferred to least . I Candidate gets 1 point if a last preference I Candidate with most points wins I Voter orders candidates from most preferred to least I Candidate gets n points if someone's first preference I If one candidate has > 50%, they win I Otherwise, eliminate candidate with fewest first choice votes I Repeat as necessary I Borda Count: Review Methods of Voting: I Instant Runoff: I Voter orders candidates from most preferred to least I Look at everyone's first choice . I Candidate gets 1 point if a last preference I Candidate with most points wins I Voter orders candidates from most preferred to least I Candidate gets n points if someone's first preference I Otherwise, eliminate candidate with fewest first choice votes I Repeat as necessary I Borda Count: Review Methods of Voting: I Instant Runoff: I Voter orders candidates from most preferred to least I Look at everyone's first choice I If one candidate has > 50%, they win . I Candidate gets 1 point if a last preference I Candidate with most points wins I Voter orders candidates from most preferred to least I Candidate gets n points if someone's first preference I Repeat as necessary I Borda Count: Review Methods of Voting: I Instant Runoff: I Voter orders candidates from most preferred to least I Look at everyone's first choice I If one candidate has > 50%, they win I Otherwise, eliminate candidate with fewest first choice votes . I Candidate gets 1 point if a last preference I Candidate with most points wins I Voter orders candidates from most preferred to least I Candidate gets n points if someone's first preference I Borda Count: Review Methods of Voting: I Instant Runoff: I Voter orders candidates from most preferred to least I Look at everyone's first choice I If one candidate has > 50%, they win I Otherwise, eliminate candidate with fewest first choice votes I Repeat as necessary . I Candidate gets 1 point if a last preference I Candidate with most points wins I Voter orders candidates from most preferred to least I Candidate gets n points if someone's first preference Review Methods of Voting: I Instant Runoff: I Voter orders candidates from most preferred to least I Look at everyone's first choice I If one candidate has > 50%, they win I Otherwise, eliminate candidate with fewest first choice votes I Repeat as necessary I Borda Count: . I Candidate gets 1 point if a last preference I Candidate with most points wins I Candidate gets n points if someone's first preference Review Methods of Voting: I Instant Runoff: I Voter orders candidates from most preferred to least I Look at everyone's first choice I If one candidate has > 50%, they win I Otherwise, eliminate candidate with fewest first choice votes I Repeat as necessary I Borda Count: I Voter orders candidates from most preferred to least I Candidate gets 1 point if a last preference I Candidate with most points wins . Review Methods of Voting: I Instant Runoff: I Voter orders candidates from most preferred to least I Look at everyone's first choice I If one candidate has > 50%, they win I Otherwise, eliminate candidate with fewest first choice votes I Repeat as necessary I Borda Count: I Voter orders candidates from most preferred to least I Candidate gets n points if someone's first preference I Candidate with most points wins Review Methods of Voting: I Instant Runoff: I Voter orders candidates from most preferred to least I Look at everyone's first choice I If one candidate has > 50%, they win I Otherwise, eliminate candidate with fewest first choice votes I Repeat as necessary I Borda Count: I Voter orders candidates from most preferred to least I Candidate gets n points if someone's first preference . I Candidate gets 1 point if a last preference Review Methods of Voting: I Instant Runoff: I Voter orders candidates from most preferred to least I Look at everyone's first choice I If one candidate has > 50%, they win I Otherwise, eliminate candidate with fewest first choice votes I Repeat as necessary I Borda Count: I Voter orders candidates from most preferred to least I Candidate gets n points if someone's first preference . I Candidate gets 1 point if a last preference I Candidate with most points wins I A I D I B I Need to consider which voting methods are fair I Who is the plurality winner? I Who is the instant runoff winner? I Who is the Borda count winner? I Who should win the election? Example Number of Voters 14 10 8 4 1 1st choice ACDBC 2nd choice BBCDD 3rd choice CDBCB 4th choice DAAAA I D I B I Need to consider which voting methods are fair I A I Who is the instant runoff winner? I Who is the Borda count winner? I Who should win the election? Example Number of Voters 14 10 8 4 1 1st choice ACDBC 2nd choice BBCDD 3rd choice CDBCB 4th choice DAAAA I Who is the plurality winner? I D I B I Need to consider which voting methods are fair I Who is the instant runoff winner? I Who is the Borda count winner? I Who should win the election? Example Number of Voters 14 10 8 4 1 1st choice ACDBC 2nd choice BBCDD 3rd choice CDBCB 4th choice DAAAA I Who is the plurality winner? I A I B I Need to consider which voting methods are fair I D I Who is the Borda count winner? I Who should win the election? Example Number of Voters 14 10 8 4 1 1st choice ACDBC 2nd choice BBCDD 3rd choice CDBCB 4th choice DAAAA I Who is the plurality winner? I A I Who is the instant runoff winner? I B I Need to consider which voting methods are fair I Who is the Borda count winner? I Who should win the election? Example Number of Voters 14 10 8 4 1 1st choice ACDBC 2nd choice BBCDD 3rd choice CDBCB 4th choice DAAAA I Who is the plurality winner? I A I Who is the instant runoff winner? I D I Need to consider which voting methods are fair I B I Who should win the election?
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