1. Warm Up – 1/27 - Monday Who wins by Plurality with Elimination?
Who wins by Pairwise Comparison?

2. Mid-Chapter Quiz Tomorrow
Things to Know:
-Make a preference schedule
-Read information from a
preference schedule
-4 voting methods
-4 fairness criterion

3. Fairness conditions

4. Criterion Violations
Majority Criterion: Can be violated by Borda Count
Condorcet Criterion: Can be violated by any besides pairwise comparisons
Monotonicity Criterion: Violated by Plurality with Elimination
IIA Criterion: Can be violated by all!

5. Condorcet

6. Criterion Violation Worksheet

8. Sincere Voting vs. Strategic Voting
Sincere Voting means submitting a ballot that goes along with someone’s true preferences.
Strategic Voting means submitting a ballot that would give a more preferred result than if someone voted sincerely.

9. 2000 Election

10. Math’s Role