San Francisco 2010 Municipal Election - District 10
The San Francisco 2010 Municipal Election - District 10 took place on 2010-11-02. Malia Cohen won after 20 runoff rounds, and was also the Condorcet winner.
Runoff Rounds
This diagram shows the votes of each remaining candidate at each round, as well as the breakdown of votes transferred when each candidate was eliminated.
Pairwise Preferences
For every pair of candidates, this table shows what fraction of voters preferred one to the other. A preference means that either a voter ranks a candidate ahead of the other, or ranks a candidate but does not list the other. Ballots which list neither candidate are not counted towards the percent counts.
First Alternate
For every pair of candidates, this table shows the fraction of voters who ranked one candidate first ranked the other candidate second.
Final-round vote by First vote
For each candidate who was eliminated before the final round, this table shows which final-round candidate the eliminated candidate's first-round ballots went to.
Honest Approval Set
Another voting system is Approval Voting, which involves indicating one or more candidates you approve of without ranking them. The candidate with the most voters who approve of them wins. It is impossible to know how voters would vote on an approval ballot based on their ranked ballot, but two reasonable assumptions we can narrow down the set of possibe approval ballots. With these possible approval ballots, we can determine which candidates would have had a chance of winning under an approval voting system.
The assumptions we make are:
Every voter who ranked at least one candidate would have voted for at least one candidate in an approval vote.
Every voter’s approval votes would be consistent with their ranked ballot, that is, they would not vote for a candidate unless they also voted for every candidate who appeared above that candidate on their ranked ballot.
The table below shows the maximum vote margin each candidate could have received (over the next best candidate) in an approval system, subject to these assumptions.
Candidate
Most Favorable Scenario
Lynette Sweet
Wins 4,308 to 2,246
Tony Kelly
Wins 4,132 to 2,242
Malia Cohen
Wins 4,584 to 2,269
Marlene Tran
Wins 3,563 to 2,242
Steve Moss
Wins 4,033 to 2,245
Teresa Duque
Wins 2,888 to 2,242
Dewitt M. Lacy
Wins 3,770 to 2,242
Chris Jackson
Wins 3,789 to 2,274
Kristine Enea
Loses 2,242 to 1,466
Eric Smith
Loses 2,429 to 1,831
James M. Calloway
Loses 2,242 to 1,201
Diane Wesley Smith
Loses 2,242 to 1,173
Geoffrea Morris
Loses 2,242 to 874
Stephen Weber
Loses 2,242 to 852
Ashley H Rhodes
Loses 2,242 to 634
Rodney Hampton, Jr.
Loses 2,242 to 840
Ed Donaldson
Loses 2,242 to 741
Jackie Norman
Loses 2,242 to 666
Nyese Joshua
Loses 2,242 to 459
M.J. Marie Franklin
Loses 2,242 to 381
Ellsworth ''Ell'' Jennison
Loses 2,242 to 281
Write-in
Loses 2,242 to 52
Meta
Name
San Francisco 2010 Municipal Election - District 10