criteria Flashcards
majority criteria
if a candidate wins by a majority, then they should win the election by another method
head to head criteria
if a candidate wins by head to head comparisons then that candidate should win the election
Independence of Irrelevent Alternatives Criteria
If X is the winner and one or more losing candidates drop out of the race, then X should still be the winner
Monotonicity criteria
suppose X is the winner and suppose that in another election, some voters rank X higher, with no changes in other candidates then X should still win
mays theorem
in a two candidate election with an odd number of voters, majority rule is the only voting system that avoids a tie
dictatorship
one person (predecided) has all the power in selecting who will win an election
imposed rule
there is a set winner no matter how any one votes
minority rule
the person with the least amount of votes wins
anonymous factor
treats voters equally
neutral factor
treats candidates equally
monotone factor
if a candidate gains votes, they the winner
dictatorship factors met
neutral and monotone
imposed rule factors met
anonymous and monotone
minority rule factors met
anonymous and neutral
majority rule factors met
anonymous, neutral, and monotone