1. Plurality with elimination, Runoff method, Condorcet criterion

2. Plurality with Elimination
Each voter votes for one candidate.
A candidate that receiving the majority of the votes is declared the winner.
If no candidate receives a majority of the votes, then the candidate/candidates with the fewest votes is dropped from the ballot and a new election is held.
You follow this process until a candidate receives a majority of votes.

3. Example 6 7 5 3 9
1st C A B D
2nd
3rd
4th

4. Run – off Method
You only keep the top two first place voters and have an election between those two.

5. Example 8 9 5 4 2
1st C E B A
2nd D
3rd
4th
5th

6. Condorcet Criterion
If candidate X can defeat each of the other candidates in a head-to-head vote, then X is the winner of the election. Say you have candidates: A,B,C,D First say A vs. B if B wins Then try B vs. C if B wins Then try B vs. D However, if C won in step 2 then you have to go back and check C vs. A and C vs. D

7. Example A B C

8. Assignments
Classwork – Pg (a,b,c, Run-off), 29 (a,b, Run-off), 31, 33 (a,b, Run – off) Homework - Pg (Run-off), 30 (Run- off), 32, 34 (a,b, Run – off)