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BOARD OF SUPERVISORS DISTRICT 8 (SanFrancisco; 2022-11-08)

πŸ”— 2022-11-08_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_8     (tags: { from-bolson , actual , 2022 , 2022-11 , SF , SanFrancisco_CA , CA , SanFrancisco-2022 })

Below is the ABIF from the "2022-11-08_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_8" election (BOARD OF SUPERVISORS DISTRICT 8 (SanFrancisco; 2022-11-08))

ABIF submission area (show)
Method options
Ballot options

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

Results

πŸ”—https://abif.electorama.com/id/2022-11-08_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_8

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 RAFAEL MANDELMAN
FPTP RAFAEL MANDELMAN
Approval RAFAEL MANDELMAN
STAR RAFAEL MANDELMAN
Condorcet/Copeland RAFAEL MANDELMAN
Election results summary showing voting method winners
click/tap to expand
tabbed view

IRV/RCV results

2022-11-08_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_8 IRV/RCV result permalink:
πŸ”—https://abif.electorama.com/id/2022-11-08_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_8/IRV#IRV

  • IRV/RCV Winner: RAFAEL MANDELMAN with 27,260 votes (64.5%) in final round
  • Runner-up: KATE STOIA with 7,962 votes (18.8%) in final round
  • Exhausted ballots in final round: 6,825 (16.2%)
  • Number of rounds: 1
  • Ballots counted in final round: 35,433 (83.8%)
  • Majority of ballots: 21,130 (50.0%)
  • Total ballots: 42,258
Round 1
Overview:
Active ballots: 42,258 (100.0%)

Exhausted ballots: 6,732 (15.9%)
Overvotes: 93 (0.2%)

Counted ballots: 35,433 (83.8%)
Winning threshold: 17,717 (41.93%)
IRV/RCV winner:
RAFAEL MANDELMAN: 27,260 (64.5%)βœ…
β†’
KATE STOIA: 7,962 (18.8%) (πŸ›‘eliminated)
β†’
Write-in: 211 (0.5%) (πŸ›‘eliminated)
β†’

Overvotes are ballots where multiple candidates are ranked at the same, highest-ranking position.

FPTP result

"FPTP" is "First-past-the-post", also known as "plurality" or "choose-one"
2022-11-08_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_8 FPTP results permalink:
πŸ”—https://abif.electorama.com/id/2022-11-08_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_8/FPTP#FPTP
πŸ“
Note β€” Only using first-choices on ranked ballots

  • FPTP Winner: RAFAEL MANDELMAN with 27,260 first-place votes (64.5%)
  • Runner-up: KATE STOIA with 7,962 first-place votes (18.8%)
  • Margin of victory: 19,298 votes (45.7 percentage points)
  • First-place votes
    • RAFAEL MANDELMAN: 27,260 votes (64.5 %)
    • KATE STOIA: 7,962 votes (18.8 %)
    • Write-in: 211 votes (0.5 %)
  • Overvotes: 93 (0.2 %)
  • Blanks: 6,732 (15.9 %)
  • Total ballots: 42,258

Approval voting results

2022-11-08_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_8 approval voting results permalink:
πŸ”—https://abif.electorama.com/id/2022-11-08_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_8/approval#approval
πŸ“
Note β€” Approval counts estimated from 42,258 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 2 candidates appear viable: RAFAEL MANDELMAN and KATE STOIA. The approximation then assumes each voter approves up to 1 of their top-ranked viable candidates (half of 2). All candidates ranked at or above the lowest-ranked of each ballot's top viable candidates receive approval (considering up to 1 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: 42258}
{version: "0.1"}
{ballotcount_abif_metadata: "42258"}
{is_ranking_to_rating: true}
#------ candlines ------
=Write-in:[Write-in]
=[RAFAEL MANDELMAN]:[RAFAEL MANDELMAN]
=[KATE STOIA]:[KATE STOIA]
#------- votelines ------
16469:[RAFAEL MANDELMAN]/1
9415:[RAFAEL MANDELMAN]/1
4018:[KATE STOIA]/1
3321:[KATE STOIA]/1
815:[RAFAEL MANDELMAN]/1
238:[KATE STOIA]/1
181:[RAFAEL MANDELMAN]/1
140:[KATE STOIA]/1
119:[RAFAEL MANDELMAN]/1
79:[KATE STOIA]/1
76:[RAFAEL MANDELMAN]/1
65:[RAFAEL MANDELMAN]/1
64:[RAFAEL MANDELMAN]/1
46:[KATE STOIA]/1
41:[KATE STOIA]/1
40:[RAFAEL MANDELMAN]/1
34:[KATE STOIA]/1
31:[KATE STOIA]/1
24:[RAFAEL MANDELMAN]/1=Write-in/1
14:[RAFAEL MANDELMAN]/1
11:[KATE STOIA]/1=Write-in/1
11:[RAFAEL MANDELMAN]/1=Write-in/1
7:[KATE STOIA]/1=Write-in/1
6:[KATE STOIA]/1
4:[RAFAEL MANDELMAN]/1=Write-in/1
3:[KATE STOIA]/1
2:[RAFAEL MANDELMAN]/1
2:[KATE STOIA]/1=Write-in/1
2:[KATE STOIA]/1=Write-in/1
2:[KATE STOIA]/1
2:[KATE STOIA]/1
1:[KATE STOIA]/1
1:[RAFAEL MANDELMAN]/1=Write-in/1
  • Approval Winner: RAFAEL MANDELMAN
  • Approval Results:
    • RAFAEL MANDELMAN — 27,300 approvals (64.6% of ballots) (βœ… winner)
    • KATE STOIA — 7,984 approvals (18.89% of ballots)
    • Write-in — 62 approvals (0.15% of ballots)
  • Total: 42,258 ballots (35,346 total approvals)

STAR results

2022-11-08_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_8 STAR results permalink:
πŸ”—https://abif.electorama.com/id/2022-11-08_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_8/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 3 candidates, so the 1st choice gets 2 points, the 2nd choice gets 1 points, etc. These Borda scores are then used as STAR ratings for tabulation by STAR.

  • STAR winner: RAFAEL MANDELMAN
  • Finalists: RAFAEL MANDELMAN vs KATE STOIA
  • Runoff result:
    • RAFAEL MANDELMAN: 27,345 votes (64.7%)
    • KATE STOIA: 7,983 votes (18.9%)
    • No preference: 6930 voters (16.4%)
  • Total stars allocated: 85,490
  • Total ballots: 42,258
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 1,710 stars allocated by voters)
  • First round:
    • β˜…#0: RAFAEL MANDELMAN received 59,020 stars (69.0%) from 31,668 voters (74.9%)
    • β˜…#1: KATE STOIA received 25,739 stars (30.1%) from 17,729 voters (42.0%)
    • β˜…#2: Write-in received 731 stars (0.9%) from 474 voters (1.1%)
  • Finalists:
    • β˜…RAFAEL MANDELMAN (βœ… winner) preferred by 27,345 of 42,258 voters
    • β˜…KATE STOIA preferred by 7,983 of 42,258 voters
    • β˜…No preference between the finalists: 6930

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

Condorcet/Copeland results

2022-11-08_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_8 Condorcet/Copeland results permalink:
πŸ”—https://abif.electorama.com/id/2022-11-08_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_8/pairwise#pairwise
  • Winner: RAFAEL MANDELMAN
  • Runner-up: KATE STOIA (beats all other candidates except RAFAEL MANDELMAN)
  • Smallest margin: KATE STOIA over Write-in (17,683-377; margin: 17,306)
  • Largest margin: RAFAEL MANDELMAN over Write-in (31,575-301; margin: 31,274)
  • Pairwise ties: none
  • Total ballots: 42,258

Win-loss-tie (Condorcet/Copeland) table

2022-11-08_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_8 w-l-t table permalink:
πŸ”—https://abif.electorama.com/id/2022-11-08_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_8/pairwise#wlt
BOARD OF SUPERVISORS DISTRICT 8 (SanFrancisco; 2022-11-08) pairwise matchups
RAFAEL MANDELMAN
(2-0-0)
RAFAEL MANDELMAN
2 victories ⇣
KATE STOIA
(1-1-0)
RAFAEL MANDELMAN: 27,345(64.7%)
KATE STOIA: 7,983(18.9%)
(No preference: 6,930; 16.4%)
KATE STOIA
⇽ 1 loss / 1 victory† ⇣
Write-in
(0-2-0)
RAFAEL MANDELMAN: 31,575(74.7%)
Write-in: 301(0.7%)
(No preference: 10,382; 24.6%)
KATE STOIA: 17,683(41.8%)
Write-in: 377(0.9%)
(No preference: 24,198; 57.3%)

Pairwise tournament (Copeland ordered)

2022-11-08_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_8 pairwise diagram permalink:
πŸ”—https://abif.electorama.com/id/2022-11-08_SanFrancisco-BOARD_OF_SUPERVISORS_DISTRICT_8/pairwise#dot

%3 RAFAEL MANDELMAN RAFAEL MANDELMAN 2-0-0 (2 wins, 0 losses, 0 ties) KATE STOIA KATE STOIA 1-1-0 RAFAEL MANDELMAN->KATE STOIA ← RAFAEL MANDELMAN: 27345 KATE STOIA: 7983 Write-in Write-in 0-2-0 RAFAEL MANDELMAN->Write-in ← RAFAEL MANDELMAN: 31575 Write-in: 301 KATE STOIA->Write-in ← KATE STOIA: 17683 Write-in: 377

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

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