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Debian 2009 Project Leader

🔗 DPL2009     (tags: { debian , actual , orgpriv , 2009 })

Below is the ABIF from the "DPL2009" election (Debian 2009 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/DPL2009

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

IRV/RCV results

DPL2009 IRV/RCV result permalink:
🔗https://abif.electorama.com/id/DPL2009/IRV#IRV

  • IRV/RCV Winner: Steve McIntyre with 178 votes (49.3%) in final round
  • Runner-up: Stefano Zacchiroli with 134 votes (37.1%) in final round
  • Exhausted ballots in final round: 34 (9.4%)
  • Number of rounds: 1
  • Ballots counted in final round: 327 (90.6%)
  • Majority of ballots: 181 (50.1%)
  • Total ballots: 361
Round 1
Overview:
Active ballots: 361 (100.0%)

Exhausted ballots: 0 (0.0%)
Overvotes: 34 (9.4%)

Counted ballots: 327 (90.6%)
Winning threshold: 164 (45.43%)
IRV/RCV winner:
Steve McIntyre: 178 (49.3%)✅
→
Stefano Zacchiroli: 134 (37.1%) (🛑eliminated)
→
None Of The Above: 15 (4.2%) (🛑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"
DPL2009 FPTP results permalink:
🔗https://abif.electorama.com/id/DPL2009/FPTP#FPTP
📝
Note — Only using first-choices on ranked ballots

  • FPTP Winner: Steve McIntyre with 178 first-place votes (49.3%)
  • Runner-up: Stefano Zacchiroli with 134 first-place votes (37.1%)
  • Margin of victory: 44 votes (12.2 percentage points)
  • First-place votes
    • Steve McIntyre: 178 votes (49.3 %)
    • Stefano Zacchiroli: 134 votes (37.1 %)
    • None Of The Above: 15 votes (4.2 %)
  • Overvotes: 34 (9.4 %)
  • Total ballots: 361

Approval voting results

DPL2009 approval voting results permalink:
🔗https://abif.electorama.com/id/DPL2009/approval#approval
📝
Note — Approval counts estimated from 361 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: Steve McIntyre and Stefano Zacchiroli. 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: 361}
{ballotcount_abif_metadata: "361"}
{description: "2009 Debian Project Leader election, won by Steve McIntyre"}
{is_ranking_to_rating: true}
#------ candlines ------
=StefanoZacchiroli:[Stefano Zacchiroli]
=SteveMcIntyre:[Steve McIntyre]
=NOTA:[None Of The Above]
#------- votelines ------
1:StefanoZacchiroli/1
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1:StefanoZacchiroli/1
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1:SteveMcIntyre/1
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1:StefanoZacchiroli/1
1:SteveMcIntyre/1
1:StefanoZacchiroli/1
  • Approval Winner: Steve McIntyre
  • Approval Results:
    • Steve McIntyre (SteveMcIntyre) — 185 approvals (51.25% of ballots) (✅ winner)
    • Stefano Zacchiroli (StefanoZacchiroli) — 141 approvals (39.06% of ballots)
    • None Of The Above (NOTA) — 14 approvals (3.88% of ballots)
  • Total: 361 ballots (340 total approvals)

STAR results

DPL2009 STAR results permalink:
🔗https://abif.electorama.com/id/DPL2009/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 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: Steve McIntyre
  • Finalists: Steve McIntyre vs Stefano Zacchiroli
  • Runoff result:
    • Steve McIntyre: 185 votes (51.2%)
    • Stefano Zacchiroli: 142 votes (39.3%)
    • No preference: 34 voters (9.4%)
  • Total stars allocated: 1,127
  • Total ballots: 361
★★★★★★

★★★★★

★★★★★★
★★★★★
★★★★★★
★★★★★
★★★★★★
★★★★★
★★★★★★
(one star above is approximately 23 stars allocated by voters)
  • First round:
    • ★#0: Steve McIntyre received 550 stars (48.8%) from 339 voters (93.9%)
    • ★#1: Stefano Zacchiroli received 501 stars (44.5%) from 333 voters (92.2%)
    • ★#2: None Of The Above received 76 stars (6.7%) from 59 voters (16.3%)
  • Finalists:
    • ★Steve McIntyre (✅ winner) preferred by 185 of 361 voters
    • ★Stefano Zacchiroli preferred by 142 of 361 voters
    • ★No preference between the finalists: 34

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

Condorcet/Copeland results

DPL2009 Condorcet/Copeland results permalink:
🔗https://abif.electorama.com/id/DPL2009/pairwise#pairwise
  • Winner: Steve McIntyre
  • Runner-up: Stefano Zacchiroli (beats all other candidates except Steve McIntyre)
  • Smallest margin: Steve McIntyre over Stefano Zacchiroli (185-142; margin: 43)
  • Largest margin: Steve McIntyre over None Of The Above (329-22; margin: 307)
  • Pairwise ties: none
  • Total ballots: 361

Win-loss-tie (Condorcet/Copeland) table

DPL2009 w-l-t table permalink:
🔗https://abif.electorama.com/id/DPL2009/pairwise#wlt
Debian 2009 Project Leader pairwise matchups
Steve McIntyre
(2-0-0)
Steve McIntyre
2 victories ⇣
Stefano Zacchiroli
(1-1-0)
Steve McIntyre: 185(51.2%)
Stefano Zacchiroli: 142(39.3%)
(No preference: 34; 9.4%)
Stefano Zacchiroli
⇽ 1 loss / 1 victory† ⇣
None Of The Above
(0-2-0)
Steve McIntyre: 329(91.1%)
None Of The Above: 22(6.1%)
(No preference: 10; 2.8%)
Stefano Zacchiroli: 323(89.5%)
None Of The Above: 23(6.4%)
(No preference: 15; 4.2%)

Pairwise tournament (Copeland ordered)

DPL2009 pairwise diagram permalink:
🔗https://abif.electorama.com/id/DPL2009/pairwise#dot

%3 SteveMcIntyre SteveMcIntyre 2-0-0 (2 wins, 0 losses, 0 ties) StefanoZacchiroli StefanoZacchiroli 1-1-0 SteveMcIntyre->StefanoZacchiroli ← SteveMcIntyre: 185 StefanoZacchiroli: 142 NOTA NOTA 0-2-0 SteveMcIntyre->NOTA ← SteveMcIntyre: 329 NOTA: 22 StefanoZacchiroli->NOTA ← StefanoZacchiroli: 323 NOTA: 23

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

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