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Board of Supervisors District 7 (SanFrancisco; 2016-11-06)

πŸ”— 2016-11-06_SanFrancisco-Board_of_Supervisors_District_7     (tags: { from-bolson , actual , SF , SanFrancisco_CA , 2016 , 2016-11 , CA , SanFrancisco-2016 })

Below is the ABIF from the "2016-11-06_SanFrancisco-Board_of_Supervisors_District_7" election (Board of Supervisors District 7 (SanFrancisco; 2016-11-06))

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Method options
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Voting methods: IRV β€’ FPTP β€’ approval β€’ STAR β€’ Pairwise β€’ All methods

Results

πŸ”—https://abif.electorama.com/id/2016-11-06_SanFrancisco-Board_of_Supervisors_District_7

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 NORMAN YEE
FPTP NORMAN YEE
Approval NORMAN YEE
STAR NORMAN YEE
Condorcet/Copeland NORMAN YEE
Election results summary showing voting method winners
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tabbed view

IRV/RCV results

2016-11-06_SanFrancisco-Board_of_Supervisors_District_7 IRV/RCV result permalink:
πŸ”—https://abif.electorama.com/id/2016-11-06_SanFrancisco-Board_of_Supervisors_District_7/IRV#IRV

  • IRV/RCV Winner: NORMAN YEE with 17,696 votes (44.8%) in final round
  • Runner-up: JOEL ENGARDIO with 12,866 votes (32.6%) in final round
  • Exhausted ballots in final round: 8,924 (22.6%)
  • Number of rounds: 4
  • Ballots counted in final round: 30,562 (77.4%)
  • Majority of ballots: 19,744 (50.0%)
  • Total ballots: 39,486
Round 1 Round 2 Round 3 Round 4
Overview:
Active ballots: 39,486 (100.0%)

Exhausted ballots: 4,137 (10.5%)
Counted ballots: 35,349 (89.5%)
Winning threshold: 17,675 (44.76%)
Overview:
Active ballots: 39,486 (100.0%)

Exhausted ballots: 4,376 (11.1%)
Counted ballots: 35,110 (88.9%)
Winning threshold: 17,556 (44.46%)
Overview:
Active ballots: 39,486 (100.0%)

Exhausted ballots: 5,352 (13.6%)
Counted ballots: 34,134 (86.4%)
Winning threshold: 17,068 (43.23%)
Overview:
Active ballots: 39,486 (100.0%)

Exhausted ballots: 8,924 (22.6%)
Counted ballots: 30,562 (77.4%)
Winning threshold: 15,282 (38.70%)
NORMAN YEE: 14,137 (35.8%)
β†’
NORMAN YEE: 14,645 (37.1%)
β†’
NORMAN YEE: 15,792 (40.0%)
β†’
IRV/RCV winner:
NORMAN YEE: 17,696 (44.8%)βœ…
β†’
JOEL ENGARDIO: 7,675 (19.4%)
β†’
JOEL ENGARDIO: 8,004 (20.3%)
β†’
JOEL ENGARDIO: 9,642 (24.4%)
β†’
JOEL ENGARDIO: 12,866 (32.6%) (πŸ›‘eliminated)
β†’
BEN MATRANGA: 6,520 (16.5%)
β†’
BEN MATRANGA: 6,860 (17.4%)
β†’
BEN MATRANGA: 8,700 (22.0%) (πŸ›‘eliminated)
β†’
BEN MATRANGA
JOHN FARRELL: 4,975 (12.6%)
β†’
JOHN FARRELL: 5,601 (14.2%) (πŸ›‘eliminated)
β†’
JOHN FARRELL JOHN FARRELL
MIKE YOUNG: 2,042 (5.2%) (πŸ›‘eliminated)
β†’
MIKE YOUNG MIKE YOUNG MIKE YOUNG

FPTP result

"FPTP" is "First-past-the-post", also known as "plurality" or "choose-one"
2016-11-06_SanFrancisco-Board_of_Supervisors_District_7 FPTP results permalink:
πŸ”—https://abif.electorama.com/id/2016-11-06_SanFrancisco-Board_of_Supervisors_District_7/FPTP#FPTP
πŸ“
Note β€” Only using first-choices on ranked ballots

  • FPTP Winner: NORMAN YEE with 14,137 first-place votes (35.8%)
  • Runner-up: JOEL ENGARDIO with 7,675 first-place votes (19.4%)
  • Margin of victory: 6,462 votes (16.4 percentage points)
  • First-place votes
    • NORMAN YEE: 14,137 votes (35.8 %)
    • JOEL ENGARDIO: 7,675 votes (19.4 %)
    • BEN MATRANGA: 6,520 votes (16.5 %)
    • JOHN FARRELL: 4,975 votes (12.6 %)
    • MIKE YOUNG: 2,042 votes (5.2 %)
  • Blanks: 4,137 (10.5 %)
  • Total ballots: 39,486

Approval voting results

2016-11-06_SanFrancisco-Board_of_Supervisors_District_7 approval voting results permalink:
πŸ”—https://abif.electorama.com/id/2016-11-06_SanFrancisco-Board_of_Supervisors_District_7/approval#approval
πŸ“
Note β€” Approval counts estimated from 39,486 ranked ballots using favorite_viable_half method
Details

The 'favorite_viable_half' conversion algorithm: find the candidate with the most first preferences, and then determine the minimum number of figurative seats that would need to be open in order for the candidate to exceed the Hare quota with the given first-prefs. We use this to estimate how many candidates are likely to be viable candidates.

Using first-choice vote totals as a rough guide, approximately 3 candidates appear viable: NORMAN YEE, JOEL ENGARDIO, and BEN MATRANGA. The approximation then assumes each voter approves up to 2 of their top-ranked viable candidates (half of 3, rounded up). All candidates ranked at or above the lowest-ranked of each ballot's top viable candidates receive approval (considering up to 2 viable candidates per ballot).

See transformed ballots

Note: For Approval, these choose_many ballots are inferred from ranked ballots.

Conversion method: favorite_viable_half

#------- metadata -------
{ballotcount: 39486}
{version: "0.1"}
{ballotcount_abif_metadata: "39486"}
{is_ranking_to_rating: true}
#------ candlines ------
=[NORMAN YEE]:[NORMAN YEE]
=[BEN MATRANGA]:[BEN MATRANGA]
=[JOEL ENGARDIO]:[JOEL ENGARDIO]
=[JOHN FARRELL]:[JOHN FARRELL]
=[MIKE YOUNG]:[MIKE YOUNG]
#------- votelines ------
4233:[NORMAN YEE]/1
1096:[BEN MATRANGA]/1=[NORMAN YEE]/1
1008:[JOEL ENGARDIO]/1=[NORMAN YEE]/1
983:[JOEL ENGARDIO]/1
823:[BEN MATRANGA]/1=[JOEL ENGARDIO]/1
770:[BEN MATRANGA]/1=[JOEL ENGARDIO]/1
742:[NORMAN YEE]/1
740:[BEN MATRANGA]/1=[JOEL ENGARDIO]/1
715:[BEN MATRANGA]/1=[NORMAN YEE]/1
707:[BEN MATRANGA]/1
694:[BEN MATRANGA]/1=[JOEL ENGARDIO]/1=[JOHN FARRELL]/1
669:[JOEL ENGARDIO]/1=[NORMAN YEE]/1
619:[JOEL ENGARDIO]/1=[NORMAN YEE]/1
598:[NORMAN YEE]/1
587:[BEN MATRANGA]/1
561:[BEN MATRANGA]/1=[JOHN FARRELL]/1=[NORMAN YEE]/1
543:[BEN MATRANGA]/1=[JOEL ENGARDIO]/1=[JOHN FARRELL]/1
535:[JOEL ENGARDIO]/1=[NORMAN YEE]/1
529:[BEN MATRANGA]/1=[NORMAN YEE]/1
509:[NORMAN YEE]/1
505:[BEN MATRANGA]/1=[NORMAN YEE]/1
492:[JOEL ENGARDIO]/1
465:[BEN MATRANGA]/1=[JOEL ENGARDIO]/1
462:[BEN MATRANGA]/1=[MIKE YOUNG]/1=[NORMAN YEE]/1
460:[JOEL ENGARDIO]/1=[JOHN FARRELL]/1=[MIKE YOUNG]/1
444:[BEN MATRANGA]/1=[JOEL ENGARDIO]/1
443:[BEN MATRANGA]/1=[JOHN FARRELL]/1=[MIKE YOUNG]/1
442:[JOEL ENGARDIO]/1=[MIKE YOUNG]/1=[NORMAN YEE]/1
430:[JOEL ENGARDIO]/1=[JOHN FARRELL]/1=[NORMAN YEE]/1
430:[BEN MATRANGA]/1=[JOEL ENGARDIO]/1
420:[JOEL ENGARDIO]/1=[NORMAN YEE]/1
413:[JOEL ENGARDIO]/1=[NORMAN YEE]/1
412:[BEN MATRANGA]/1=[JOEL ENGARDIO]/1=[JOHN FARRELL]/1
366:[BEN MATRANGA]/1=[JOEL ENGARDIO]/1=[JOHN FARRELL]/1
361:[BEN MATRANGA]/1
348:[BEN MATRANGA]/1=[NORMAN YEE]/1
324:[BEN MATRANGA]/1=[NORMAN YEE]/1
324:[BEN MATRANGA]/1=[JOHN FARRELL]/1
322:[BEN MATRANGA]/1=[JOEL ENGARDIO]/1
302:[JOEL ENGARDIO]/1=[NORMAN YEE]/1
297:[BEN MATRANGA]/1=[JOHN FARRELL]/1=[NORMAN YEE]/1
296:[JOEL ENGARDIO]/1=[JOHN FARRELL]/1=[NORMAN YEE]/1
284:[JOEL ENGARDIO]/1=[JOHN FARRELL]/1
279:[BEN MATRANGA]/1=[JOEL ENGARDIO]/1
278:[BEN MATRANGA]/1
271:[NORMAN YEE]/1
269:[JOHN FARRELL]/1=[MIKE YOUNG]/1=[NORMAN YEE]/1
260:[BEN MATRANGA]/1=[JOHN FARRELL]/1=[NORMAN YEE]/1
254:[BEN MATRANGA]/1=[JOEL ENGARDIO]/1=[MIKE YOUNG]/1
251:[BEN MATRANGA]/1=[NORMAN YEE]/1
241:[JOEL ENGARDIO]/1
236:[BEN MATRANGA]/1=[JOHN FARRELL]/1=[NORMAN YEE]/1
218:[JOEL ENGARDIO]/1=[JOHN FARRELL]/1=[MIKE YOUNG]/1
205:[BEN MATRANGA]/1=[NORMAN YEE]/1
199:[NORMAN YEE]/1
193:[BEN MATRANGA]/1=[JOEL ENGARDIO]/1=[MIKE YOUNG]/1
192:[JOEL ENGARDIO]/1=[NORMAN YEE]/1
191:[JOEL ENGARDIO]/1
183:[BEN MATRANGA]/1
177:[JOHN FARRELL]/1=[NORMAN YEE]/1
175:[JOEL ENGARDIO]/1=[JOHN FARRELL]/1=[NORMAN YEE]/1
175:[JOEL ENGARDIO]/1=[JOHN FARRELL]/1=[NORMAN YEE]/1
175:[BEN MATRANGA]/1=[JOHN FARRELL]/1=[MIKE YOUNG]/1
172:[BEN MATRANGA]/1=[JOHN FARRELL]/1
171:[JOEL ENGARDIO]/1=[MIKE YOUNG]/1=[NORMAN YEE]/1
139:[BEN MATRANGA]/1=[MIKE YOUNG]/1=[NORMAN YEE]/1
136:[JOHN FARRELL]/1=[MIKE YOUNG]/1=[NORMAN YEE]/1
134:[MIKE YOUNG]/1=[NORMAN YEE]/1
126:[JOEL ENGARDIO]/1
115:[JOEL ENGARDIO]/1=[MIKE YOUNG]/1
110:[BEN MATRANGA]/1=[MIKE YOUNG]/1
107:[BEN MATRANGA]/1=[JOEL ENGARDIO]/1=[MIKE YOUNG]/1
106:[BEN MATRANGA]/1=[JOEL ENGARDIO]/1=[MIKE YOUNG]/1
106:[JOHN FARRELL]/1=[NORMAN YEE]/1
105:[JOEL ENGARDIO]/1=[MIKE YOUNG]/1=[NORMAN YEE]/1
98:[BEN MATRANGA]/1=[MIKE YOUNG]/1=[NORMAN YEE]/1
97:[MIKE YOUNG]/1=[NORMAN YEE]/1
85:[JOEL ENGARDIO]/1=[JOHN FARRELL]/1
81:[JOEL ENGARDIO]/1=[MIKE YOUNG]/1=[NORMAN YEE]/1
79:[JOEL ENGARDIO]/1
78:[BEN MATRANGA]/1=[MIKE YOUNG]/1=[NORMAN YEE]/1
57:[NORMAN YEE]/1
53:[JOEL ENGARDIO]/1=[NORMAN YEE]/1
51:[BEN MATRANGA]/1=[NORMAN YEE]/1
45:[BEN MATRANGA]/1=[JOEL ENGARDIO]/1
43:[BEN MATRANGA]/1
42:[JOEL ENGARDIO]/1=[JOHN FARRELL]/1
42:[BEN MATRANGA]/1=[JOHN FARRELL]/1
36:[JOHN FARRELL]/1=[NORMAN YEE]/1
35:[BEN MATRANGA]/1=[JOEL ENGARDIO]/1
34:[BEN MATRANGA]/1=[NORMAN YEE]/1
31:[BEN MATRANGA]/1
29:[JOEL ENGARDIO]/1=[NORMAN YEE]/1
29:[JOEL ENGARDIO]/1=[NORMAN YEE]/1
29:[BEN MATRANGA]/1
27:[MIKE YOUNG]/1=[NORMAN YEE]/1
26:[NORMAN YEE]/1
25:[NORMAN YEE]/1
25:[JOEL ENGARDIO]/1
24:[NORMAN YEE]/1
24:[BEN MATRANGA]/1=[MIKE YOUNG]/1
20:[BEN MATRANGA]/1=[JOEL ENGARDIO]/1
20:[JOEL ENGARDIO]/1
17:[JOEL ENGARDIO]/1=[MIKE YOUNG]/1
17:[BEN MATRANGA]/1=[NORMAN YEE]/1
16:[JOEL ENGARDIO]/1
16:[BEN MATRANGA]/1=[MIKE YOUNG]/1
15:[JOEL ENGARDIO]/1
14:[JOEL ENGARDIO]/1=[NORMAN YEE]/1
14:[BEN MATRANGA]/1
12:[JOHN FARRELL]/1=[NORMAN YEE]/1
12:[NORMAN YEE]/1
12:[BEN MATRANGA]/1=[JOHN FARRELL]/1
12:[BEN MATRANGA]/1
12:[BEN MATRANGA]/1=[JOEL ENGARDIO]/1
9:[BEN MATRANGA]/1=[NORMAN YEE]/1
8:[JOEL ENGARDIO]/1=[MIKE YOUNG]/1
8:[JOEL ENGARDIO]/1=[JOHN FARRELL]/1
6:[JOEL ENGARDIO]/1
6:[MIKE YOUNG]/1=[NORMAN YEE]/1
5:[BEN MATRANGA]/1=[MIKE YOUNG]/1
4:[BEN MATRANGA]/1
2:[JOEL ENGARDIO]/1=[MIKE YOUNG]/1
  • Approval Winner: NORMAN YEE
  • Approval Results:
    • NORMAN YEE — 20,069 approvals (50.83% of ballots) (βœ… winner)
    • BEN MATRANGA — 16,847 approvals (42.67% of ballots)
    • JOEL ENGARDIO — 16,651 approvals (42.17% of ballots)
    • JOHN FARRELL — 7,446 approvals (18.86% of ballots)
    • MIKE YOUNG — 4,498 approvals (11.39% of ballots)
  • Total: 39,486 ballots (65,511 total approvals)

STAR results

2016-11-06_SanFrancisco-Board_of_Supervisors_District_7 STAR results permalink:
πŸ”—https://abif.electorama.com/id/2016-11-06_SanFrancisco-Board_of_Supervisors_District_7/STAR#STAR
πŸ“
Note β€” STAR ratings estimated from ranked ballots using Borda scoring method
Details

The ranked ballots have been converted to STAR ratings using Borda scoring: each candidate receives points equal to (number_of_candidates - their_rank). In this election, we have 5 candidates, so the 1st choice gets 4 points, the 2nd choice gets 3 points, etc. These Borda scores are then used as STAR ratings for tabulation by STAR.

  • STAR winner: NORMAN YEE
  • Finalists: NORMAN YEE vs JOEL ENGARDIO
  • Runoff result:
    • NORMAN YEE: 17,696 votes (44.8%)
    • JOEL ENGARDIO: 12,866 votes (32.6%)
    • No preference: 8924 voters (22.6%)
  • Total stars allocated: 266,828
  • Total ballots: 39,486
β˜…β˜…β˜…β˜…β˜…β˜…

β˜…β˜…β˜…β˜…β˜…

β˜…β˜…β˜…β˜…β˜…β˜…
β˜…β˜…β˜…β˜…β˜…
β˜…β˜…β˜…β˜…β˜…β˜…
β˜…β˜…β˜…β˜…β˜…
β˜…β˜…β˜…β˜…β˜…β˜…
β˜…β˜…β˜…β˜…β˜…
β˜…β˜…β˜…β˜…β˜…β˜…
(one star above is approximately 5,337 stars allocated by voters)
  • First round:
    • β˜…#0: NORMAN YEE received 74,883 stars (28.1%) from 21,269 voters (53.9%)
    • β˜…#1: JOEL ENGARDIO received 57,280 stars (21.5%) from 18,095 voters (45.8%)
    • β˜…#2: BEN MATRANGA received 57,130 stars (21.4%) from 18,524 voters (46.9%)
    • β˜…#3: JOHN FARRELL received 46,836 stars (17.6%) from 15,603 voters (39.5%)
    • β˜…#4: MIKE YOUNG received 30,699 stars (11.5%) from 11,037 voters (28.0%)
  • Finalists:
    • β˜…NORMAN YEE (βœ… winner) preferred by 17,696 of 39,486 voters
    • β˜…JOEL ENGARDIO preferred by 12,866 of 39,486 voters
    • β˜…No preference between the finalists: 8924

NOTE: Since ratings or stars are not present in the provided ballots, allocated stars are estimated using a Borda-like formula.

Condorcet/Copeland results

2016-11-06_SanFrancisco-Board_of_Supervisors_District_7 Condorcet/Copeland results permalink:
πŸ”—https://abif.electorama.com/id/2016-11-06_SanFrancisco-Board_of_Supervisors_District_7/pairwise#pairwise
  • Winner: NORMAN YEE
  • Runner-up: JOEL ENGARDIO (beats all other candidates except NORMAN YEE)
  • Smallest margin: JOEL ENGARDIO over BEN MATRANGA (13,427-13,011; margin: 416)
  • Largest margin: NORMAN YEE over MIKE YOUNG (19,928-7,227; margin: 12,701)
  • Pairwise ties: none
  • Total ballots: 39,486

Win-loss-tie (Condorcet/Copeland) table

2016-11-06_SanFrancisco-Board_of_Supervisors_District_7 w-l-t table permalink:
πŸ”—https://abif.electorama.com/id/2016-11-06_SanFrancisco-Board_of_Supervisors_District_7/pairwise#wlt
Board of Supervisors District 7 (SanFrancisco; 2016-11-06) pairwise matchups
NORMAN YEE
(4-0-0)
NORMAN YEE
4 victories ⇣
JOEL ENGARDIO
(3-1-0)
NORMAN YEE: 17,696(44.8%)
JOEL ENGARDIO: 12,866(32.6%)
(No preference: 8,924; 22.6%)
JOEL ENGARDIO
⇽ 1 loss / 3 victories† ⇣
BEN MATRANGA
(2-2-0)
NORMAN YEE: 18,165(46.0%)
BEN MATRANGA: 12,536(31.7%)
(No preference: 8,785; 22.2%)
JOEL ENGARDIO: 13,427(34.0%)
BEN MATRANGA: 13,011(33.0%)
(No preference: 13,048; 33.0%)
BEN MATRANGA
⇽ 2 losses / 2 victories† ⇣
JOHN FARRELL
(1-3-0)
NORMAN YEE: 19,094(48.4%)
JOHN FARRELL: 11,245(28.5%)
(No preference: 9,147; 23.2%)
JOEL ENGARDIO: 14,746(37.3%)
JOHN FARRELL: 11,399(28.9%)
(No preference: 13,341; 33.8%)
BEN MATRANGA: 14,978(37.9%)
JOHN FARRELL: 10,724(27.2%)
(No preference: 13,784; 34.9%)
JOHN FARRELL
⇽ 3 losses / 1 victory† ⇣
MIKE YOUNG
(0-4-0)
NORMAN YEE: 19,928(50.5%)
MIKE YOUNG: 7,227(18.3%)
(No preference: 12,331; 31.2%)
JOEL ENGARDIO: 16,241(41.1%)
MIKE YOUNG: 8,174(20.7%)
(No preference: 15,071; 38.2%)
BEN MATRANGA: 16,605(42.1%)
MIKE YOUNG: 7,939(20.1%)
(No preference: 14,942; 37.8%)
JOHN FARRELL: 13,468(34.1%)
MIKE YOUNG: 7,359(18.6%)
(No preference: 18,659; 47.3%)

Pairwise tournament (Copeland ordered)

2016-11-06_SanFrancisco-Board_of_Supervisors_District_7 pairwise diagram permalink:
πŸ”—https://abif.electorama.com/id/2016-11-06_SanFrancisco-Board_of_Supervisors_District_7/pairwise#dot

%3 NORMAN YEE NORMAN YEE 4-0-0 (4 wins, 0 losses, 0 ties) JOEL ENGARDIO JOEL ENGARDIO 3-1-0 NORMAN YEE->JOEL ENGARDIO ← NORMAN YEE: 17696 JOEL ENGARDIO: 12866 BEN MATRANGA BEN MATRANGA 2-2-0 NORMAN YEE->BEN MATRANGA ← NORMAN YEE: 18165 BEN MATRANGA: 12536 JOHN FARRELL JOHN FARRELL 1-3-0 NORMAN YEE->JOHN FARRELL ← NORMAN YEE: 19094 JOHN FARRELL: 11245 MIKE YOUNG MIKE YOUNG 0-4-0 NORMAN YEE->MIKE YOUNG ← NORMAN YEE: 19928 MIKE YOUNG: 7227 JOEL ENGARDIO->BEN MATRANGA ← JOEL ENGARDIO: 13427 BEN MATRANGA: 13011 JOEL ENGARDIO->JOHN FARRELL ← JOEL ENGARDIO: 14746 JOHN FARRELL: 11399 JOEL ENGARDIO->MIKE YOUNG ← JOEL ENGARDIO: 16241 MIKE YOUNG: 8174 BEN MATRANGA->JOHN FARRELL ← BEN MATRANGA: 14978 JOHN FARRELL: 10724 BEN MATRANGA->MIKE YOUNG ← BEN MATRANGA: 16605 MIKE YOUNG: 7939 JOHN FARRELL->MIKE YOUNG ← JOHN FARRELL: 13468 MIKE YOUNG: 7359

Voting methods: IRV β€’ FPTP β€’ approval β€’ STAR β€’ Pairwise β€’ All methods

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