BOARD OF SUPERVISORS DISTRICT 5 (SanFrancisco; 2020-11-03)
Below is the ABIF from the "2020-11-03_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_5" election (BOARD OF SUPERVISORS DISTRICT 5 (SanFrancisco; 2020-11-03))
Voting methods: IRV β’ FPTP β’ approval β’ STAR β’ Pairwise β’ All methods
Results
Below are the results of the election represented above using various election methods with abiftool/abiflib. The detected ballot type from the ABIF above is "ranked". Some methods may transform these ballots for analysis; see method notices for details. Resubmit the ABIF with "Transform ballots" turned off to minimize the transformations.
| Method | Winner |
|---|---|
| IRV/RCV | DEAN PRESTON |
| FPTP | DEAN PRESTON |
| Approval | DEAN PRESTON |
| STAR | DEAN PRESTON |
| Condorcet/Copeland | DEAN PRESTON |
IRV/RCV results
πhttps://abif.electorama.com/id/2020-11-03_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_5/IRV#IRV
- IRV/RCV Winner: DEAN PRESTON with 21,359 votes (46.0%) in final round
- Runner-up: VALLIE BROWN with 16,834 votes (36.3%) in final round
- Exhausted ballots in final round: 4,673 (10.1%)
- Number of rounds: 1
- Ballots counted in final round: 41,744 (89.9%)
- Majority of ballots: 23,209 (50.0%)
- Total ballots: 46,417
| Round 1 |
|---|
| Overview: Active ballots: 46,417 (100.0%) Exhausted ballots: 4,550 (9.8%) Overvotes: 123 (0.3%) Counted ballots: 41,744 (89.9%) Winning threshold: 20,873 (44.97%) |
| IRV/RCV winner: DEAN PRESTON: 21,359 (46.0%)β β
|
|
VALLIE BROWN: 16,834 (36.3%)
(πeliminated)
β
|
|
DANIEL LANDRY: 2,414 (5.2%)
(πeliminated)
β
|
|
NOMVULA O'MEARA: 1,137 (2.4%)
(πeliminated)
β
|
Overvotes are ballots where multiple candidates are ranked at the same, highest-ranking position.
FPTP result
2020-11-03_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_5 FPTP results permalink:
πhttps://abif.electorama.com/id/2020-11-03_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_5/FPTP#FPTP
- FPTP Winner: DEAN PRESTON with 21,359 first-place votes (46.0%)
- Runner-up: VALLIE BROWN with 16,834 first-place votes (36.3%)
- Margin of victory: 4,525 votes (9.7 percentage points)
- First-place votes
- DEAN PRESTON: 21,359 votes (46.0 %)
- VALLIE BROWN: 16,834 votes (36.3 %)
- DANIEL LANDRY: 2,414 votes (5.2 %)
- NOMVULA O'MEARA: 1,137 votes (2.4 %)
- Overvotes: 123 (0.3 %)
- Blanks: 4,550 (9.8 %)
- Total ballots: 46,417
Approval voting results
πhttps://abif.electorama.com/id/2020-11-03_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_5/approval#approval
See transformed ballots
Note: For Approval, these choose_many ballots are inferred from ranked ballots.
Conversion method: favorite_viable_half
#------- metadata -------
{ballotcount: 46417}
{version: "0.1"}
{ballotcount_abif_metadata: "46417"}
{is_ranking_to_rating: true}
#------ candlines ------
=[VALLIE BROWN]:[VALLIE BROWN]
=[DEAN PRESTON]:[DEAN PRESTON]
=[DANIEL LANDRY]:[DANIEL LANDRY]
=[NOMVULA O'MEARA]:[NOMVULA O'MEARA]
#------- votelines ------
3930:[VALLIE BROWN]/1
3671:[DEAN PRESTON]/1
3614:[DEAN PRESTON]/1
3217:[DEAN PRESTON]/1
2821:[VALLIE BROWN]/1
2374:[DEAN PRESTON]/1
1904:[VALLIE BROWN]/1
1804:[DEAN PRESTON]/1
1668:[VALLIE BROWN]/1
1565:[VALLIE BROWN]/1
1361:[DEAN PRESTON]/1
1188:[DEAN PRESTON]/1
1118:[DEAN PRESTON]/1
1018:[VALLIE BROWN]/1
751:[VALLIE BROWN]/1
514:[VALLIE BROWN]/1
494:[VALLIE BROWN]/1
476:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
476:[DEAN PRESTON]/1
465:[VALLIE BROWN]/1
448:[DEAN PRESTON]/1
320:[DEAN PRESTON]/1
292:[DEAN PRESTON]/1
271:[DEAN PRESTON]/1
262:[DANIEL LANDRY]/1=[DEAN PRESTON]/1
254:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
246:[DEAN PRESTON]/1
234:[VALLIE BROWN]/1
232:[VALLIE BROWN]/1
221:[DEAN PRESTON]/1
213:[DANIEL LANDRY]/1=[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
200:[DANIEL LANDRY]/1=[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
200:[DANIEL LANDRY]/1=[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
180:[DANIEL LANDRY]/1=[DEAN PRESTON]/1
176:[VALLIE BROWN]/1
172:[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
158:[DANIEL LANDRY]/1=[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
148:[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
147:[VALLIE BROWN]/1
97:[VALLIE BROWN]/1
94:[DEAN PRESTON]/1
85:[DEAN PRESTON]/1
79:[VALLIE BROWN]/1
79:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
75:[DANIEL LANDRY]/1=[DEAN PRESTON]/1
74:[VALLIE BROWN]/1
73:[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
72:[DEAN PRESTON]/1
67:[DEAN PRESTON]/1
65:[VALLIE BROWN]/1
61:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
60:[VALLIE BROWN]/1
57:[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
56:[VALLIE BROWN]/1
50:[DANIEL LANDRY]/1=[DEAN PRESTON]/1
42:[DANIEL LANDRY]/1=[DEAN PRESTON]/1
41:[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
40:[VALLIE BROWN]/1
37:[DEAN PRESTON]/1
37:[VALLIE BROWN]/1
29:[DEAN PRESTON]/1
27:[DANIEL LANDRY]/1=[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
26:[DEAN PRESTON]/1
26:[DEAN PRESTON]/1
25:[DANIEL LANDRY]/1=[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
24:[DANIEL LANDRY]/1=[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
22:[VALLIE BROWN]/1
22:[DEAN PRESTON]/1
22:[VALLIE BROWN]/1
22:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
22:[DEAN PRESTON]/1
22:[VALLIE BROWN]/1
21:[VALLIE BROWN]/1
21:[VALLIE BROWN]/1
21:[VALLIE BROWN]/1
21:[DEAN PRESTON]/1
19:[DEAN PRESTON]/1
19:[DEAN PRESTON]/1
19:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
18:[DEAN PRESTON]/1
18:[VALLIE BROWN]/1
18:[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
16:[VALLIE BROWN]/1
16:[VALLIE BROWN]/1
16:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
16:[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
15:[VALLIE BROWN]/1
15:[DEAN PRESTON]/1
15:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
14:[DANIEL LANDRY]/1=[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
14:[DEAN PRESTON]/1
14:[VALLIE BROWN]/1
13:[VALLIE BROWN]/1
12:[VALLIE BROWN]/1
12:[VALLIE BROWN]/1
12:[DANIEL LANDRY]/1=[DEAN PRESTON]/1
11:[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
11:[VALLIE BROWN]/1
11:[DEAN PRESTON]/1
10:[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
10:[VALLIE BROWN]/1
10:[VALLIE BROWN]/1
10:[DEAN PRESTON]/1
10:[VALLIE BROWN]/1
10:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
10:[DANIEL LANDRY]/1=[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
10:[DEAN PRESTON]/1
9:[DANIEL LANDRY]/1=[DEAN PRESTON]/1
9:[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
9:[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
9:[DEAN PRESTON]/1
9:[DEAN PRESTON]/1
8:[DANIEL LANDRY]/1=[DEAN PRESTON]/1
8:[VALLIE BROWN]/1
8:[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
8:[DEAN PRESTON]/1
8:[VALLIE BROWN]/1
8:[DEAN PRESTON]/1
7:[DANIEL LANDRY]/1=[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
7:[DANIEL LANDRY]/1=[DEAN PRESTON]/1
7:[VALLIE BROWN]/1
7:[DEAN PRESTON]/1
6:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
6:[DEAN PRESTON]/1
6:[DEAN PRESTON]/1
6:[VALLIE BROWN]/1
6:[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
6:[VALLIE BROWN]/1
6:[VALLIE BROWN]/1
6:[DEAN PRESTON]/1
6:[VALLIE BROWN]/1
6:[DANIEL LANDRY]/1=[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
5:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
5:[DEAN PRESTON]/1
5:[VALLIE BROWN]/1
5:[VALLIE BROWN]/1
5:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
5:[DANIEL LANDRY]/1=[DEAN PRESTON]/1
4:[VALLIE BROWN]/1
4:[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
4:[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
4:[VALLIE BROWN]/1
4:[VALLIE BROWN]/1
4:[DEAN PRESTON]/1
4:[VALLIE BROWN]/1
4:[VALLIE BROWN]/1
4:[DEAN PRESTON]/1
4:[VALLIE BROWN]/1
4:[VALLIE BROWN]/1
4:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
4:[DANIEL LANDRY]/1=[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
4:[DANIEL LANDRY]/1=[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
4:[DANIEL LANDRY]/1=[DEAN PRESTON]/1
4:[VALLIE BROWN]/1
4:[DEAN PRESTON]/1
3:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
3:[DEAN PRESTON]/1
3:[DANIEL LANDRY]/1=[DEAN PRESTON]/1
3:[DEAN PRESTON]/1
3:[DEAN PRESTON]/1
3:[DANIEL LANDRY]/1=[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
3:[DEAN PRESTON]/1
3:[VALLIE BROWN]/1
2:[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
2:[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
2:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
2:[VALLIE BROWN]/1
2:[DEAN PRESTON]/1
2:[VALLIE BROWN]/1
2:[VALLIE BROWN]/1
2:[DANIEL LANDRY]/1=[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
2:[VALLIE BROWN]/1
2:[DEAN PRESTON]/1
2:[DEAN PRESTON]/1
2:[VALLIE BROWN]/1
2:[DANIEL LANDRY]/1=[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
2:[VALLIE BROWN]/1
2:[DEAN PRESTON]/1
2:[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
2:[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
2:[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
2:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
2:[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
2:[VALLIE BROWN]/1
2:[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
2:[VALLIE BROWN]/1
2:[DANIEL LANDRY]/1=[DEAN PRESTON]/1
2:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
2:[DEAN PRESTON]/1
2:[DEAN PRESTON]/1
2:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
2:[DANIEL LANDRY]/1=[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
2:[VALLIE BROWN]/1
2:[VALLIE BROWN]/1
2:[DEAN PRESTON]/1
2:[DEAN PRESTON]/1
2:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
2:[DANIEL LANDRY]/1=[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
2:[DEAN PRESTON]/1
2:[DEAN PRESTON]/1
2:[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
2:[DANIEL LANDRY]/1=[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
1:[DEAN PRESTON]/1
1:[DEAN PRESTON]/1
1:[DEAN PRESTON]/1
1:[VALLIE BROWN]/1
1:[DANIEL LANDRY]/1=[DEAN PRESTON]/1
1:[DEAN PRESTON]/1
1:[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
1:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
1:[DEAN PRESTON]/1
1:[DEAN PRESTON]/1
1:[DANIEL LANDRY]/1=[DEAN PRESTON]/1
1:[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
1:[DANIEL LANDRY]/1=[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
1:[VALLIE BROWN]/1
1:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
1:[DEAN PRESTON]/1
1:[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
1:[DANIEL LANDRY]/1=[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
1:[DEAN PRESTON]/1
1:[VALLIE BROWN]/1
1:[VALLIE BROWN]/1
1:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
1:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
1:[DANIEL LANDRY]/1=[DEAN PRESTON]/1
1:[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
1:[DANIEL LANDRY]/1=[DEAN PRESTON]/1
1:[VALLIE BROWN]/1
1:[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
1:[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
1:[DEAN PRESTON]/1
1:[DANIEL LANDRY]/1=[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
1:[DANIEL LANDRY]/1=[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
1:[DANIEL LANDRY]/1=[DEAN PRESTON]/1
1:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
1:[DEAN PRESTON]/1
1:[DEAN PRESTON]/1
1:[DANIEL LANDRY]/1=[DEAN PRESTON]/1
1:[VALLIE BROWN]/1
1:[VALLIE BROWN]/1
1:[DANIEL LANDRY]/1=[VALLIE BROWN]/1
1:[DANIEL LANDRY]/1=[DEAN PRESTON]/1=[NOMVULA O'MEARA]/1
1:[VALLIE BROWN]/1
1:[VALLIE BROWN]/1
1:[DEAN PRESTON]/1
1:[DEAN PRESTON]/1
1:[NOMVULA O'MEARA]/1=[VALLIE BROWN]/1
- Approval Winner: DEAN PRESTON
- Approval Results:
- DEAN PRESTON — 22,772 approvals (49.06% of ballots) (β winner)
- VALLIE BROWN — 18,596 approvals (40.06% of ballots)
- DANIEL LANDRY — 2,566 approvals (5.53% of ballots)
- NOMVULA O'MEARA — 1,519 approvals (3.27% of ballots)
- Total: 46,417 ballots (45,453 total approvals)
STAR results
πhttps://abif.electorama.com/id/2020-11-03_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_5/STAR#STAR
- STAR winner: DEAN PRESTON
- Finalists: DEAN PRESTON vs VALLIE BROWN
- Runoff result:
- DEAN PRESTON: 22,795 votes (49.1%)
- VALLIE BROWN: 18,616 votes (40.1%)
- No preference: 5006 voters (10.8%)
- Total stars allocated: 221,394
- Total ballots: 46,417
- First round:
- β #0: DEAN PRESTON received 82,520 stars (37.3%) from 32,231 voters (69.4%)
- β #1: VALLIE BROWN received 71,078 stars (32.1%) from 28,550 voters (61.5%)
- β #2: DANIEL LANDRY received 40,822 stars (18.4%) from 26,510 voters (57.1%)
- β #3: NOMVULA O'MEARA received 26,974 stars (12.2%) from 16,519 voters (35.6%)
- Finalists:
- β DEAN PRESTON (β winner) preferred by 22,795 of 46,417 voters
- β VALLIE BROWN preferred by 18,616 of 46,417 voters
- β No preference between the finalists: 5006
NOTE: Since ratings or stars are not present in the provided ballots, allocated stars are estimated using a Borda-like formula.
Condorcet/Copeland results
πhttps://abif.electorama.com/id/2020-11-03_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_5/pairwise#pairwise
- Winner: DEAN PRESTON
- Runner-up: VALLIE BROWN (beats all other candidates except DEAN PRESTON)
- Smallest margin: DANIEL LANDRY over NOMVULA O'MEARA (18,988-11,021; margin: 7,967)
- Largest margin: DEAN PRESTON over NOMVULA O'MEARA (31,005-5,714; margin: 25,291)
- Pairwise ties: none
- Total ballots: 46,417
Win-loss-tie (Condorcet/Copeland) table
πhttps://abif.electorama.com/id/2020-11-03_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_5/pairwise#wlt
|
DEAN PRESTON
(3-0-0)
|
DEAN PRESTON
3 victories β£ |
||
|---|---|---|---|
|
VALLIE BROWN
(2-1-0)
|
DEAN PRESTON:
22,795(49.1%)
VALLIE BROWN:
18,616(40.1%)
(No preference: 5,006; 10.8%)
|
VALLIE BROWN
β½ 1 loss / 2 victoriesβ β£ |
|
|
DANIEL LANDRY
(1-2-0)
|
DEAN PRESTON:
28,446(61.3%)
DANIEL LANDRY:
9,014(19.4%)
(No preference: 8,957; 19.3%)
|
VALLIE BROWN:
24,994(53.8%)
DANIEL LANDRY:
12,582(27.1%)
(No preference: 8,841; 19.0%)
|
DANIEL LANDRY
β½ 2 losses / 1 victoryβ β£ |
|
NOMVULA O'MEARA
(0-3-0)
|
DEAN PRESTON:
31,005(66.8%)
NOMVULA O'MEARA:
5,714(12.3%)
(No preference: 9,698; 20.9%)
|
VALLIE BROWN:
27,253(58.7%)
NOMVULA O'MEARA:
9,985(21.5%)
(No preference: 9,179; 19.8%)
|
DANIEL LANDRY:
18,988(40.9%)
NOMVULA O'MEARA:
11,021(23.7%)
(No preference: 16,408; 35.3%)
|
Pairwise tournament (Copeland ordered)
πhttps://abif.electorama.com/id/2020-11-03_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_5/pairwise#dot
Voting methods: IRV β’ FPTP β’ approval β’ STAR β’ Pairwise β’ All methods
(homepage)