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City Attorney - Oakland (AlamedaCounty; 2020-11-03)

πŸ”— 2020-11-03_AlamedaCounty-City_Attorney_-_Oakland     (tags: { AlamedaCounty_CA , 2020-11 , from-bolson , actual , CA , AlamedaCounty-2020 , 2020 })

Below is the ABIF from the "2020-11-03_AlamedaCounty-City_Attorney_-_Oakland" election (City Attorney - Oakland (AlamedaCounty; 2020-11-03))

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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-City_Attorney_-_Oakland

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

IRV/RCV results

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

  • IRV/RCV Winner: BARBARA PARKER with 140,970 votes (79.6%) in final round
  • Runner-up: ELI FERRAN with 34,483 votes (19.5%) in final round
  • Exhausted ballots in final round: 798 (0.5%)
  • Number of rounds: 1
  • Ballots counted in final round: 176,356 (99.5%)
  • Majority of ballots: 88,578 (50.0%)
  • Total ballots: 177,154
Round 1
Overview:
Active ballots: 177,154 (100.0%)

Exhausted ballots: 0 (0.0%)
Overvotes: 798 (0.5%)

Counted ballots: 176,356 (99.5%)
Winning threshold: 88,179 (49.78%)
IRV/RCV winner:
BARBARA PARKER: 140,970 (79.6%)βœ…
β†’
ELI FERRAN: 34,483 (19.5%) (πŸ›‘eliminated)
β†’
Write-in: 903 (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"
2020-11-03_AlamedaCounty-City_Attorney_-_Oakland FPTP results permalink:
πŸ”—https://abif.electorama.com/id/2020-11-03_AlamedaCounty-City_Attorney_-_Oakland/FPTP#FPTP
πŸ“
Note β€” Only using first-choices on ranked ballots

  • FPTP Winner: BARBARA PARKER with 140,970 first-place votes (79.6%)
  • Runner-up: ELI FERRAN with 34,483 first-place votes (19.5%)
  • Margin of victory: 106,487 votes (60.1 percentage points)
  • First-place votes
    • BARBARA PARKER: 140,970 votes (79.6 %)
    • ELI FERRAN: 34,483 votes (19.5 %)
    • Write-in: 903 votes (0.5 %)
  • Overvotes: 798 (0.5 %)
  • Total ballots: 177,154

Approval voting results

2020-11-03_AlamedaCounty-City_Attorney_-_Oakland approval voting results permalink:
πŸ”—https://abif.electorama.com/id/2020-11-03_AlamedaCounty-City_Attorney_-_Oakland/approval#approval
πŸ“
Note β€” Approval counts estimated from 177,154 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: BARBARA PARKER and ELI FERRAN. 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: 177154}
{version: "0.1"}
{ballotcount_abif_metadata: "177154"}
{is_ranking_to_rating: true}
#------ candlines ------
=Write-in:[Write-in]
=[BARBARA PARKER]:[BARBARA PARKER]
=[ELI FERRAN]:[ELI FERRAN]
#------- votelines ------
85861:[BARBARA PARKER]/1
50597:[BARBARA PARKER]/1
21042:[ELI FERRAN]/1
12149:[ELI FERRAN]/1
1042:[BARBARA PARKER]/1
762:[BARBARA PARKER]/1
572:[BARBARA PARKER]/1
369:[BARBARA PARKER]/1
304:[BARBARA PARKER]/1
267:[ELI FERRAN]/1
246:[BARBARA PARKER]/1
182:[ELI FERRAN]/1
156:[ELI FERRAN]/1
150:[BARBARA PARKER]/1
124:[BARBARA PARKER]/1
123:[ELI FERRAN]/1
119:[BARBARA PARKER]/1
113:[ELI FERRAN]/1
106:[ELI FERRAN]/1=Write-in/1
103:[BARBARA PARKER]/1=Write-in/1
82:[BARBARA PARKER]/1
72:[BARBARA PARKER]/1
70:[BARBARA PARKER]/1
70:[BARBARA PARKER]/1=Write-in/1
69:[ELI FERRAN]/1
68:[BARBARA PARKER]/1
63:[ELI FERRAN]/1
62:[ELI FERRAN]/1
56:[ELI FERRAN]/1=Write-in/1
56:[ELI FERRAN]/1
54:[BARBARA PARKER]/1
44:[BARBARA PARKER]/1
43:[BARBARA PARKER]/1
42:[BARBARA PARKER]/1
37:[BARBARA PARKER]/1
34:[BARBARA PARKER]/1
29:[BARBARA PARKER]/1
26:[BARBARA PARKER]/1
25:[BARBARA PARKER]/1
25:[ELI FERRAN]/1
25:[BARBARA PARKER]/1
24:[BARBARA PARKER]/1
22:[BARBARA PARKER]/1
20:[ELI FERRAN]/1
19:[ELI FERRAN]/1
19:[ELI FERRAN]/1=Write-in/1
16:[ELI FERRAN]/1
14:[ELI FERRAN]/1
14:[BARBARA PARKER]/1
14:[BARBARA PARKER]/1
11:[ELI FERRAN]/1
11:[ELI FERRAN]/1
11:[ELI FERRAN]/1
11:[BARBARA PARKER]/1
10:[BARBARA PARKER]/1
10:[ELI FERRAN]/1
10:[BARBARA PARKER]/1
9:[ELI FERRAN]/1
9:[BARBARA PARKER]/1
8:[BARBARA PARKER]/1
7:[BARBARA PARKER]/1
7:[BARBARA PARKER]/1=Write-in/1
7:[BARBARA PARKER]/1
6:[ELI FERRAN]/1
5:[BARBARA PARKER]/1
5:[BARBARA PARKER]/1
5:[BARBARA PARKER]/1
5:[ELI FERRAN]/1
5:[ELI FERRAN]/1=Write-in/1
5:[BARBARA PARKER]/1
5:[BARBARA PARKER]/1=Write-in/1
5:[ELI FERRAN]/1
4:[ELI FERRAN]/1=Write-in/1
4:[ELI FERRAN]/1=Write-in/1
4:[ELI FERRAN]/1
4:[ELI FERRAN]/1
4:[BARBARA PARKER]/1=Write-in/1
3:[BARBARA PARKER]/1=Write-in/1
3:[ELI FERRAN]/1
3:[ELI FERRAN]/1
3:[BARBARA PARKER]/1=Write-in/1
3:[ELI FERRAN]/1
3:[ELI FERRAN]/1=Write-in/1
3:[BARBARA PARKER]/1
3:[ELI FERRAN]/1
3:[BARBARA PARKER]/1=Write-in/1
2:[BARBARA PARKER]/1
2:[ELI FERRAN]/1
2:[BARBARA PARKER]/1=Write-in/1
2:[ELI FERRAN]/1=Write-in/1
2:[BARBARA PARKER]/1=Write-in/1
2:[ELI FERRAN]/1
2:[BARBARA PARKER]/1=Write-in/1
2:[ELI FERRAN]/1
2:[BARBARA PARKER]/1
2:[ELI FERRAN]/1=Write-in/1
2:[ELI FERRAN]/1=Write-in/1
2:[BARBARA PARKER]/1
2:[BARBARA PARKER]/1=Write-in/1
2:[ELI FERRAN]/1=Write-in/1
2:[BARBARA PARKER]/1
2:[BARBARA PARKER]/1
2:[ELI FERRAN]/1
1:[ELI FERRAN]/1=Write-in/1
1:[ELI FERRAN]/1=Write-in/1
1:[BARBARA PARKER]/1=Write-in/1
1:[ELI FERRAN]/1
1:[BARBARA PARKER]/1=Write-in/1
1:[ELI FERRAN]/1
1:[BARBARA PARKER]/1
1:[ELI FERRAN]/1
1:[BARBARA PARKER]/1=Write-in/1
1:[ELI FERRAN]/1
1:[BARBARA PARKER]/1=Write-in/1
1:[ELI FERRAN]/1
1:[ELI FERRAN]/1
1:[BARBARA PARKER]/1=Write-in/1
1:[ELI FERRAN]/1
1:[BARBARA PARKER]/1
1:[ELI FERRAN]/1=Write-in/1
1:[BARBARA PARKER]/1=Write-in/1
1:[BARBARA PARKER]/1
1:[BARBARA PARKER]/1=Write-in/1
1:[ELI FERRAN]/1
1:[ELI FERRAN]/1
1:[BARBARA PARKER]/1
1:[ELI FERRAN]/1
1:[ELI FERRAN]/1
  • Approval Winner: BARBARA PARKER
  • Approval Results:
    • BARBARA PARKER — 141,183 approvals (79.7% of ballots) (βœ… winner)
    • ELI FERRAN — 34,691 approvals (19.58% of ballots)
    • Write-in — 421 approvals (0.24% of ballots)
  • Total: 177,154 ballots (176,295 total approvals)

STAR results

2020-11-03_AlamedaCounty-City_Attorney_-_Oakland STAR results permalink:
πŸ”—https://abif.electorama.com/id/2020-11-03_AlamedaCounty-City_Attorney_-_Oakland/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: BARBARA PARKER
  • Finalists: BARBARA PARKER vs ELI FERRAN
  • Runoff result:
    • BARBARA PARKER: 141,293 votes (79.8%)
    • ELI FERRAN: 34,756 votes (19.6%)
    • No preference: 1105 voters (0.6%)
  • Total stars allocated: 469,098
  • Total ballots: 177,154
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 9,382 stars allocated by voters)
  • First round:
    • β˜…#0: BARBARA PARKER received 305,616 stars (65.1%) from 163,913 voters (92.5%)
    • β˜…#1: ELI FERRAN received 159,984 stars (34.1%) from 124,821 voters (70.5%)
    • β˜…#2: Write-in received 3,498 stars (0.7%) from 2,297 voters (1.3%)
  • Finalists:
    • β˜…BARBARA PARKER (βœ… winner) preferred by 141,293 of 177,154 voters
    • β˜…ELI FERRAN preferred by 34,756 of 177,154 voters
    • β˜…No preference between the finalists: 1105

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-City_Attorney_-_Oakland Condorcet/Copeland results permalink:
πŸ”—https://abif.electorama.com/id/2020-11-03_AlamedaCounty-City_Attorney_-_Oakland/pairwise#pairwise
  • Winner: BARBARA PARKER
  • Runner-up: ELI FERRAN (beats all other candidates except BARBARA PARKER)
  • Smallest margin: ELI FERRAN over Write-in (124,262-1,725; margin: 122,537)
  • Largest margin: BARBARA PARKER over Write-in (163,402-1,240; margin: 162,162)
  • Pairwise ties: none
  • Total ballots: 177,154

Win-loss-tie (Condorcet/Copeland) table

2020-11-03_AlamedaCounty-City_Attorney_-_Oakland w-l-t table permalink:
πŸ”—https://abif.electorama.com/id/2020-11-03_AlamedaCounty-City_Attorney_-_Oakland/pairwise#wlt
City Attorney - Oakland (AlamedaCounty; 2020-11-03) pairwise matchups
BARBARA PARKER
(2-0-0)
BARBARA PARKER
2 victories ⇣
ELI FERRAN
(1-1-0)
BARBARA PARKER: 141,293(79.8%)
ELI FERRAN: 34,756(19.6%)
(No preference: 1,105; 0.6%)
ELI FERRAN
⇽ 1 loss / 1 victory† ⇣
Write-in
(0-2-0)
BARBARA PARKER: 163,402(92.2%)
Write-in: 1,240(0.7%)
(No preference: 12,512; 7.1%)
ELI FERRAN: 124,262(70.1%)
Write-in: 1,725(1.0%)
(No preference: 51,167; 28.9%)

Pairwise tournament (Copeland ordered)

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

%3 BARBARA PARKER BARBARA PARKER 2-0-0 (2 wins, 0 losses, 0 ties) ELI FERRAN ELI FERRAN 1-1-0 BARBARA PARKER->ELI FERRAN ← BARBARA PARKER: 141293 ELI FERRAN: 34756 Write-in Write-in 0-2-0 BARBARA PARKER->Write-in ← BARBARA PARKER: 163402 Write-in: 1240 ELI FERRAN->Write-in ← ELI FERRAN: 124262 Write-in: 1725

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

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