Ordinal Ballot Election Practice

Prepared by:

Joseph Malkevitch
Department of Mathematics
York College (CUNY)
Jamaica, New York 11451


email:

malkevitch@york.cuny.edu

web page:

http://york.cuny.edu/~malk

Given the election below:

Determine the winner (if there is one) using the methods:

a. Plurality

b. Condorcet

(As part of your solution draw a digraph which shows who beats whom. Use a directed edge from X to Y if X beats Y in a two-way contest.)

c. Borda count

(as part of your solution construct a pairwise preference matrix.)

d. Sequential run-off

e (Standard) Run-off

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f. Borda count sequential run-off

g. Coombs

h. Bucklin

Bucklin works as follow: If no one wins a majority based on the first place votes, look at only first and second place votes, to see if someone now has a majority. Continue until a winner emerges.