EXERCISE 47.2 (Voting between three candidates) Suppose there are three candi- dates, A, B, and C. A tie for first place is possible in this case; assume that a citizen who prefers a win by x to a win by y ranks a tie between x and y between an outright win for x and an outright win for y. Show that a citizen's only weakly dominated action is a vote for her least preferred candidate. Find a Nash equilib- rium in which some citizen does not vote for her favorite candidate, but the action she takes is not weakly dominated.

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EXERCISE 47.2 (Voting between three candidates) Suppose there are three candi-
dates, A, B, and C. A tie for first place is possible in this case; assume that a citizen
who prefers a win by x to a win by y ranks a tie between x and y between an
outright win for x and an outright win for y. Show that a citizen's only weakly
dominated action is a vote for her least preferred candidate. Find a Nash equilib-
rium in which some citizen does not vote for her favorite candidate, but the action
she takes is not weakly dominated.
Transcribed Image Text:EXERCISE 47.2 (Voting between three candidates) Suppose there are three candi- dates, A, B, and C. A tie for first place is possible in this case; assume that a citizen who prefers a win by x to a win by y ranks a tie between x and y between an outright win for x and an outright win for y. Show that a citizen's only weakly dominated action is a vote for her least preferred candidate. Find a Nash equilib- rium in which some citizen does not vote for her favorite candidate, but the action she takes is not weakly dominated.
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