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Member City Council Dist. 2 - San Leandro (AlamedaCounty; 2020-11-03)

πŸ”— 2020-11-03_AlamedaCounty-Member_City_Council_Dist._2_-_San_Leandro     (tags: { AlamedaCounty_CA , 2020-11 , from-bolson , actual , CA , AlamedaCounty-2020 , 2020 })

Below is the ABIF from the "2020-11-03_AlamedaCounty-Member_City_Council_Dist._2_-_San_Leandro" election (Member City Council Dist. 2 - San Leandro (AlamedaCounty; 2020-11-03))

ABIF submission area (show)
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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/2020-11-03_AlamedaCounty-Member_City_Council_Dist._2_-_San_Leandro

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

IRV/RCV results

2020-11-03_AlamedaCounty-Member_City_Council_Dist._2_-_San_Leandro IRV/RCV result permalink:
πŸ”—https://abif.electorama.com/id/2020-11-03_AlamedaCounty-Member_City_Council_Dist._2_-_San_Leandro/IRV#IRV

  • IRV/RCV Winner: BRYAN AZEVEDO with 18,452 votes (53.1%) in final round
  • Runner-up: ED HERNANDEZ with 15,778 votes (45.4%) in final round
  • Exhausted ballots in final round: 225 (0.6%)
  • Number of rounds: 1
  • Ballots counted in final round: 34,550 (99.4%)
  • Majority of ballots: 17,388 (50.0%)
  • Total ballots: 34,775
Round 1
Overview:
Active ballots: 34,775 (100.0%)

Exhausted ballots: 0 (0.0%)
Overvotes: 225 (0.6%)

Counted ballots: 34,550 (99.4%)
Winning threshold: 17,276 (49.68%)
IRV/RCV winner:
BRYAN AZEVEDO: 18,452 (53.1%)βœ…
β†’
ED HERNANDEZ: 15,778 (45.4%) (πŸ›‘eliminated)
β†’
Write-in: 320 (0.9%) (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"
2020-11-03_AlamedaCounty-Member_City_Council_Dist._2_-_San_Leandro FPTP results permalink:
πŸ”—https://abif.electorama.com/id/2020-11-03_AlamedaCounty-Member_City_Council_Dist._2_-_San_Leandro/FPTP#FPTP
πŸ“
Note β€” Only using first-choices on ranked ballots

  • FPTP Winner: BRYAN AZEVEDO with 18,452 first-place votes (53.1%)
  • Runner-up: ED HERNANDEZ with 15,778 first-place votes (45.4%)
  • Margin of victory: 2,674 votes (7.7 percentage points)
  • First-place votes
    • BRYAN AZEVEDO: 18,452 votes (53.1 %)
    • ED HERNANDEZ: 15,778 votes (45.4 %)
    • Write-in: 320 votes (0.9 %)
  • Overvotes: 225 (0.6 %)
  • Total ballots: 34,775

Approval voting results

2020-11-03_AlamedaCounty-Member_City_Council_Dist._2_-_San_Leandro approval voting results permalink:
πŸ”—https://abif.electorama.com/id/2020-11-03_AlamedaCounty-Member_City_Council_Dist._2_-_San_Leandro/approval#approval
πŸ“
Note β€” Approval counts estimated from 34,775 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: BRYAN AZEVEDO and ED HERNANDEZ. 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: 34775}
{version: "0.1"}
{ballotcount_abif_metadata: "34775"}
{is_ranking_to_rating: true}
#------ candlines ------
=Write-in:[Write-in]
=[BRYAN AZEVEDO]:[BRYAN AZEVEDO]
=[ED HERNANDEZ]:[ED HERNANDEZ]
#------- votelines ------
11163:[BRYAN AZEVEDO]/1
9573:[ED HERNANDEZ]/1
6132:[BRYAN AZEVEDO]/1
5343:[ED HERNANDEZ]/1
252:[BRYAN AZEVEDO]/1
207:[BRYAN AZEVEDO]/1
158:[BRYAN AZEVEDO]/1
157:[ED HERNANDEZ]/1
130:[ED HERNANDEZ]/1
117:[ED HERNANDEZ]/1
83:[ED HERNANDEZ]/1
70:[ED HERNANDEZ]/1
68:[BRYAN AZEVEDO]/1
68:[BRYAN AZEVEDO]/1
66:[BRYAN AZEVEDO]/1
65:[BRYAN AZEVEDO]/1
62:[BRYAN AZEVEDO]/1
51:[ED HERNANDEZ]/1
41:[BRYAN AZEVEDO]/1=Write-in/1
37:[ED HERNANDEZ]/1=Write-in/1
37:[ED HERNANDEZ]/1
32:[ED HERNANDEZ]/1
28:[BRYAN AZEVEDO]/1
27:[ED HERNANDEZ]/1
23:[ED HERNANDEZ]/1
22:[BRYAN AZEVEDO]/1
21:[BRYAN AZEVEDO]/1
21:[BRYAN AZEVEDO]/1
21:[ED HERNANDEZ]/1
17:[ED HERNANDEZ]/1=Write-in/1
17:[ED HERNANDEZ]/1
17:[ED HERNANDEZ]/1
16:[BRYAN AZEVEDO]/1
16:[ED HERNANDEZ]/1
15:[ED HERNANDEZ]/1
14:[BRYAN AZEVEDO]/1
13:[BRYAN AZEVEDO]/1
11:[BRYAN AZEVEDO]/1=Write-in/1
11:[ED HERNANDEZ]/1
10:[BRYAN AZEVEDO]/1
10:[ED HERNANDEZ]/1
8:[ED HERNANDEZ]/1
6:[BRYAN AZEVEDO]/1
6:[BRYAN AZEVEDO]/1
6:[BRYAN AZEVEDO]/1=Write-in/1
6:[BRYAN AZEVEDO]/1
6:[BRYAN AZEVEDO]/1
5:[ED HERNANDEZ]/1=Write-in/1
4:[BRYAN AZEVEDO]/1
4:[BRYAN AZEVEDO]/1
4:[BRYAN AZEVEDO]/1
4:[BRYAN AZEVEDO]/1
3:[BRYAN AZEVEDO]/1
3:[BRYAN AZEVEDO]/1
3:[BRYAN AZEVEDO]/1=Write-in/1
3:[BRYAN AZEVEDO]/1=Write-in/1
3:[BRYAN AZEVEDO]/1=Write-in/1
3:[ED HERNANDEZ]/1
2:[BRYAN AZEVEDO]/1=Write-in/1
2:[BRYAN AZEVEDO]/1
2:[BRYAN AZEVEDO]/1
2:[BRYAN AZEVEDO]/1
2:[BRYAN AZEVEDO]/1=Write-in/1
2:[BRYAN AZEVEDO]/1
2:[BRYAN AZEVEDO]/1
2:[ED HERNANDEZ]/1
2:[ED HERNANDEZ]/1
2:[BRYAN AZEVEDO]/1
2:[ED HERNANDEZ]/1
2:[ED HERNANDEZ]/1
1:[ED HERNANDEZ]/1=Write-in/1
1:[BRYAN AZEVEDO]/1
1:[ED HERNANDEZ]/1
1:[BRYAN AZEVEDO]/1
1:[BRYAN AZEVEDO]/1
1:[ED HERNANDEZ]/1
1:[ED HERNANDEZ]/1
1:[BRYAN AZEVEDO]/1=Write-in/1
1:[BRYAN AZEVEDO]/1=Write-in/1
1:[ED HERNANDEZ]/1
1:[ED HERNANDEZ]/1
1:[BRYAN AZEVEDO]/1
1:[ED HERNANDEZ]/1=Write-in/1
1:[BRYAN AZEVEDO]/1
1:[ED HERNANDEZ]/1
1:[ED HERNANDEZ]/1
1:[BRYAN AZEVEDO]/1=Write-in/1
1:[BRYAN AZEVEDO]/1
1:[ED HERNANDEZ]/1
1:[BRYAN AZEVEDO]/1=Write-in/1
1:[BRYAN AZEVEDO]/1
1:[BRYAN AZEVEDO]/1
1:[BRYAN AZEVEDO]/1=Write-in/1
1:[ED HERNANDEZ]/1
1:[ED HERNANDEZ]/1=Write-in/1
  • Approval Winner: BRYAN AZEVEDO
  • Approval Results:
    • BRYAN AZEVEDO — 18,528 approvals (53.28% of ballots) (βœ… winner)
    • ED HERNANDEZ — 15,840 approvals (45.55% of ballots)
    • Write-in — 138 approvals (0.4% of ballots)
  • Total: 34,775 ballots (34,506 total approvals)

STAR results

2020-11-03_AlamedaCounty-Member_City_Council_Dist._2_-_San_Leandro STAR results permalink:
πŸ”—https://abif.electorama.com/id/2020-11-03_AlamedaCounty-Member_City_Council_Dist._2_-_San_Leandro/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: BRYAN AZEVEDO
  • Finalists: BRYAN AZEVEDO vs ED HERNANDEZ
  • Runoff result:
    • BRYAN AZEVEDO: 18,535 votes (53.3%)
    • ED HERNANDEZ: 15,872 votes (45.6%)
    • No preference: 368 voters (1.1%)
  • Total stars allocated: 92,760
  • Total ballots: 34,775
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 1,855 stars allocated by voters)
  • First round:
    • β˜…#0: BRYAN AZEVEDO received 47,628 stars (51.3%) from 28,983 voters (83.3%)
    • β˜…#1: ED HERNANDEZ received 44,096 stars (47.5%) from 28,110 voters (80.8%)
    • β˜…#2: Write-in received 1,036 stars (1.1%) from 648 voters (1.9%)
  • Finalists:
    • β˜…BRYAN AZEVEDO (βœ… winner) preferred by 18,535 of 34,775 voters
    • β˜…ED HERNANDEZ preferred by 15,872 of 34,775 voters
    • β˜…No preference between the finalists: 368

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

Condorcet/Copeland results

2020-11-03_AlamedaCounty-Member_City_Council_Dist._2_-_San_Leandro Condorcet/Copeland results permalink:
πŸ”—https://abif.electorama.com/id/2020-11-03_AlamedaCounty-Member_City_Council_Dist._2_-_San_Leandro/pairwise#pairwise
  • Winner: BRYAN AZEVEDO
  • Runner-up: ED HERNANDEZ (beats all other candidates except BRYAN AZEVEDO)
  • Smallest margin: BRYAN AZEVEDO over ED HERNANDEZ (18,535-15,872; margin: 2,663)
  • Largest margin: BRYAN AZEVEDO over Write-in (28,847-415; margin: 28,432)
  • Pairwise ties: none
  • Total ballots: 34,775

Win-loss-tie (Condorcet/Copeland) table

2020-11-03_AlamedaCounty-Member_City_Council_Dist._2_-_San_Leandro w-l-t table permalink:
πŸ”—https://abif.electorama.com/id/2020-11-03_AlamedaCounty-Member_City_Council_Dist._2_-_San_Leandro/pairwise#wlt
Member City Council Dist. 2 - San Leandro (AlamedaCounty; 2020-11-03) pairwise matchups
BRYAN AZEVEDO
(2-0-0)
BRYAN AZEVEDO
2 victories ⇣
ED HERNANDEZ
(1-1-0)
BRYAN AZEVEDO: 18,535(53.3%)
ED HERNANDEZ: 15,872(45.6%)
(No preference: 368; 1.1%)
ED HERNANDEZ
⇽ 1 loss / 1 victory† ⇣
Write-in
(0-2-0)
BRYAN AZEVEDO: 28,847(83.0%)
Write-in: 415(1.2%)
(No preference: 5,513; 15.9%)
ED HERNANDEZ: 27,957(80.4%)
Write-in: 509(1.5%)
(No preference: 6,309; 18.1%)

Pairwise tournament (Copeland ordered)

2020-11-03_AlamedaCounty-Member_City_Council_Dist._2_-_San_Leandro pairwise diagram permalink:
πŸ”—https://abif.electorama.com/id/2020-11-03_AlamedaCounty-Member_City_Council_Dist._2_-_San_Leandro/pairwise#dot

%3 BRYAN AZEVEDO BRYAN AZEVEDO 2-0-0 (2 wins, 0 losses, 0 ties) ED HERNANDEZ ED HERNANDEZ 1-1-0 BRYAN AZEVEDO->ED HERNANDEZ ← BRYAN AZEVEDO: 18535 ED HERNANDEZ: 15872 Write-in Write-in 0-2-0 BRYAN AZEVEDO->Write-in ← BRYAN AZEVEDO: 28847 Write-in: 415 ED HERNANDEZ->Write-in ← ED HERNANDEZ: 27957 Write-in: 509

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

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