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Debian 2010 Project Leader

🔗 DPL2010     (tags: { debian , actual , orgpriv , 2010 })

Below is the ABIF from the "DPL2010" election (Debian 2010 Project Leader)

ABIF submission area (show)
Method options
Ballot options

Voting methods: IRV • FPTP • approval • STAR • Pairwise • All methods

Results

🔗https://abif.electorama.com/id/DPL2010

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

IRV/RCV results

DPL2010 IRV/RCV result permalink:
🔗https://abif.electorama.com/id/DPL2010/IRV#IRV

  • IRV/RCV Winner: Stefano Zacchiroli with 228 votes (52.3%) in final round
  • Runner-up: Margarita Manterola with 97 votes (22.2%) in final round
  • Exhausted ballots in final round: 35 (8.0%)
  • Number of rounds: 1
  • Ballots counted in final round: 401 (92.0%)
  • Majority of ballots: 219 (50.2%)
  • Total ballots: 436
Round 1
Overview:
Active ballots: 436 (100.0%)

Exhausted ballots: 0 (0.0%)
Overvotes: 35 (8.0%)

Counted ballots: 401 (92.0%)
Winning threshold: 201 (46.10%)
IRV/RCV winner:
Stefano Zacchiroli: 228 (52.3%)✅
→
Margarita Manterola: 97 (22.2%) (🛑eliminated)
→
Wouter Verhelst: 60 (13.8%) (🛑eliminated)
→
Charles Plessy: 11 (2.5%) (🛑eliminated)
→
None Of The Above: 5 (1.1%) (🛑eliminated)
→

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"
DPL2010 FPTP results permalink:
🔗https://abif.electorama.com/id/DPL2010/FPTP#FPTP
📝
Note — Only using first-choices on ranked ballots

  • FPTP Winner: Stefano Zacchiroli with 228 first-place votes (52.3%)
  • Runner-up: Margarita Manterola with 97 first-place votes (22.2%)
  • Margin of victory: 131 votes (30.0 percentage points)
  • First-place votes
    • Stefano Zacchiroli: 228 votes (52.3 %)
    • Margarita Manterola: 97 votes (22.2 %)
    • Wouter Verhelst: 60 votes (13.8 %)
    • Charles Plessy: 11 votes (2.5 %)
    • None Of The Above: 5 votes (1.1 %)
  • Overvotes: 35 (8.0 %)
  • Total ballots: 436

Approval voting results

DPL2010 approval voting results permalink:
🔗https://abif.electorama.com/id/DPL2010/approval#approval
📝
Note — Approval counts estimated from 436 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: Stefano Zacchiroli and Margarita Manterola. 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: 436}
{ballotcount_abif_metadata: "436"}
{description: "2010 Debian Project Leader election, won by Stefano Zacchiroli"}
{is_ranking_to_rating: true}
#------ candlines ------
=StefanoZacchiroli:[Stefano Zacchiroli]
=WouterVerhelst:[Wouter Verhelst]
=CharlesPlessy:[Charles Plessy]
=MargaritaManterola:[Margarita Manterola]
=NOTA:[None Of The Above]
#------- votelines ------
1:MargaritaManterola/1
1:StefanoZacchiroli/1
1:StefanoZacchiroli/1
1:StefanoZacchiroli/1
1:StefanoZacchiroli/1
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1:StefanoZacchiroli/1
1:MargaritaManterola/1
1:MargaritaManterola/1
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1:StefanoZacchiroli/1
1:StefanoZacchiroli/1=WouterVerhelst/1
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1:StefanoZacchiroli/1
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1:CharlesPlessy/1=MargaritaManterola/1=WouterVerhelst/1
1:StefanoZacchiroli/1
1:MargaritaManterola/1=WouterVerhelst/1
1:CharlesPlessy/1=MargaritaManterola/1=WouterVerhelst/1
1:StefanoZacchiroli/1
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1:NOTA/1=StefanoZacchiroli/1=WouterVerhelst/1
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  • Approval Winner: Stefano Zacchiroli
  • Approval Results:
    • Stefano Zacchiroli (StefanoZacchiroli) — 274 approvals (62.84% of ballots) (✅ winner)
    • Margarita Manterola (MargaritaManterola) — 120 approvals (27.52% of ballots)
    • Wouter Verhelst (WouterVerhelst) — 61 approvals (13.99% of ballots)
    • Charles Plessy (CharlesPlessy) — 16 approvals (3.67% of ballots)
    • None Of The Above (NOTA) — 4 approvals (0.92% of ballots)
  • Total: 436 ballots (475 total approvals)

STAR results

DPL2010 STAR results permalink:
🔗https://abif.electorama.com/id/DPL2010/STAR#STAR
📝
Note — 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: Stefano Zacchiroli
  • Finalists: Stefano Zacchiroli vs Margarita Manterola
  • Runoff result:
    • Stefano Zacchiroli: 271 votes (62.2%)
    • Margarita Manterola: 124 votes (28.4%)
    • No preference: 41 voters (9.4%)
  • Total stars allocated: 4,548
  • Total ballots: 436
★★★★★★

★★★★★

★★★★★★
★★★★★
★★★★★★
★★★★★
★★★★★★
★★★★★
★★★★★★
(one star above is approximately 91 stars allocated by voters)
  • First round:
    • ★#0: Stefano Zacchiroli received 1,414 stars (31.1%) from 408 voters (93.6%)
    • ★#1: Margarita Manterola received 1,143 stars (25.1%) from 400 voters (91.7%)
    • ★#2: Wouter Verhelst received 1,099 stars (24.2%) from 403 voters (92.4%)
    • ★#3: Charles Plessy received 493 stars (10.8%) from 278 voters (63.8%)
    • ★#4: None Of The Above received 399 stars (8.8%) from 237 voters (54.4%)
  • Finalists:
    • ★Stefano Zacchiroli (✅ winner) preferred by 271 of 436 voters
    • ★Margarita Manterola preferred by 124 of 436 voters
    • ★No preference between the finalists: 41

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

Condorcet/Copeland results

DPL2010 Condorcet/Copeland results permalink:
🔗https://abif.electorama.com/id/DPL2010/pairwise#pairwise
  • Winner: Stefano Zacchiroli
  • Runner-up: Margarita Manterola (beats all other candidates except Stefano Zacchiroli)
  • Smallest margin: Margarita Manterola over Wouter Verhelst (207-177; margin: 30)
  • Largest margin: Stefano Zacchiroli over None Of The Above (395-28; margin: 367)
  • Pairwise ties: none
  • Total ballots: 436

Win-loss-tie (Condorcet/Copeland) table

DPL2010 w-l-t table permalink:
🔗https://abif.electorama.com/id/DPL2010/pairwise#wlt
Debian 2010 Project Leader pairwise matchups
Stefano Zacchiroli
(4-0-0)
Stefano Zacchiroli
4 victories ⇣
Margarita Manterola
(3-1-0)
Stefano Zacchiroli: 271(62.2%)
Margarita Manterola: 124(28.4%)
(No preference: 41; 9.4%)
Margarita Manterola
⇽ 1 loss / 3 victories† ⇣
Wouter Verhelst
(2-2-0)
Stefano Zacchiroli: 300(68.8%)
Wouter Verhelst: 102(23.4%)
(No preference: 34; 7.8%)
Margarita Manterola: 207(47.5%)
Wouter Verhelst: 177(40.6%)
(No preference: 52; 11.9%)
Wouter Verhelst
⇽ 2 losses / 2 victories† ⇣
Charles Plessy
(1-3-0)
Stefano Zacchiroli: 373(85.6%)
Charles Plessy: 33(7.6%)
(No preference: 30; 6.9%)
Margarita Manterola: 332(76.1%)
Charles Plessy: 53(12.2%)
(No preference: 51; 11.7%)
Wouter Verhelst: 334(76.6%)
Charles Plessy: 47(10.8%)
(No preference: 55; 12.6%)
Charles Plessy
⇽ 3 losses / 1 victory† ⇣
None Of The Above
(0-4-0)
Stefano Zacchiroli: 395(90.6%)
None Of The Above: 28(6.4%)
(No preference: 13; 3.0%)
Margarita Manterola: 366(83.9%)
None Of The Above: 48(11.0%)
(No preference: 22; 5.0%)
Wouter Verhelst: 375(86.0%)
None Of The Above: 39(8.9%)
(No preference: 22; 5.0%)
Charles Plessy: 217(49.8%)
None Of The Above: 183(42.0%)
(No preference: 36; 8.3%)

Pairwise tournament (Copeland ordered)

DPL2010 pairwise diagram permalink:
🔗https://abif.electorama.com/id/DPL2010/pairwise#dot

%3 StefanoZacchiroli StefanoZacchiroli 4-0-0 (4 wins, 0 losses, 0 ties) MargaritaManterola MargaritaManterola 3-1-0 StefanoZacchiroli->MargaritaManterola ← StefanoZacchiroli: 271 MargaritaManterola: 124 WouterVerhelst WouterVerhelst 2-2-0 StefanoZacchiroli->WouterVerhelst ← StefanoZacchiroli: 300 WouterVerhelst: 102 CharlesPlessy CharlesPlessy 1-3-0 StefanoZacchiroli->CharlesPlessy ← StefanoZacchiroli: 373 CharlesPlessy: 33 NOTA NOTA 0-4-0 StefanoZacchiroli->NOTA ← StefanoZacchiroli: 395 NOTA: 28 MargaritaManterola->WouterVerhelst ← MargaritaManterola: 207 WouterVerhelst: 177 MargaritaManterola->CharlesPlessy ← MargaritaManterola: 332 CharlesPlessy: 53 MargaritaManterola->NOTA ← MargaritaManterola: 366 NOTA: 48 WouterVerhelst->CharlesPlessy ← WouterVerhelst: 334 CharlesPlessy: 47 WouterVerhelst->NOTA ← WouterVerhelst: 375 NOTA: 39 CharlesPlessy->NOTA ← CharlesPlessy: 217 NOTA: 183

Voting methods: IRV • FPTP • approval • STAR • Pairwise • All methods

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