Case Study – Maine’s 2018 Congressional Race

What Actually Happened in Maine’s 2018 Congressional Race

In November 2018, Maine made history by using ranked-choice voting (RCV) for the first time in a federal election. The race for the 2nd Congressional District was fiercely contested between incumbent Republican Bruce Poliquin and Democratic challenger Jared Golden, with two independents — Tiffany Bond and Will Hoar — also on the ballot.

On election night, Poliquin led in first-choice votes, but no candidate reached the required majority. As the RCV process unfolded, votes from eliminated candidates were redistributed based on voter rankings. Ultimately, Jared Golden overtook Poliquin in the final round and was declared the winner — a result that sparked national attention and a legal challenge from Poliquin, who argued that RCV was unconstitutional. The courts upheld the system, and Golden took office.

While the official RCV process determined a single winner, our dual-seat simulation explores a richer interpretation: one that honors both majority and minority representation. By modeling voter behavior more realistically — limiting deep rankings and reducing unlikely cross-party preferences — we can better reflect how people voted and how their voices might be represented in a two-seat framework.

Maine’s 2018 Congressional Race

Candidate table

Candidate nameCandidateAffiliation
Jared GoldenBlue 1Democratic
Bruce PoliquinRed 1Republican
Tiffany BondOrange 1Independent
Will HoarGreen 1Independent

Electorate size: 289,624


Voter group table (modeled, sums to official first-choice totals)

GroupSize1st choice2nd choice3rd choice
G160,000PoliquinBondHoar
G250,000PoliquinHoarBond
G322,842Poliquin
G41,342PoliquinGolden
G560,000GoldenBondHoar
G650,000GoldenHoarBond
G720,693Golden
G141,320GoldenPoliquin
G810,200BondGoldenHoar
G94,700BondPoliquinHoar
G101,652Bond
G114,100HoarGoldenBond
G122,000HoarPoliquinBond
G13775Hoar
  • Poliquin total = 60,000 + 50,000 + 22,842 + 1,342 = 134,184
  • Golden total = 60,000 + 50,000 + 20,693 + 1,320 = 132,013
  • Bond total = 10,200 + 4,700 + 1,652 = 16,552
  • Hoar total = 4,100 + 2,000 + 775 = 6,875

Majority seat RCV process (exhaustion only split if no majority in final round)

  • Rule: Exhausted ballots are ignored until the final round. If no candidate has a majority when only two remain, exhausted ballots are equally divided between them.

Round 1 — first-choice tally

CandidateVotes
Poliquin (Red 1)134,184
Golden (Blue 1)132,013
Bond (Orange 1)16,552
Hoar (Green 1)6,875

Threshold: 144,813 No majority; eliminate Hoar.


Round 2 — eliminate Hoar; distribute G11 and G12

  • To Golden: +4,100 (G11)
  • To Poliquin: +2,000 (G12)
CandidateNew total
Poliquin134,184 + 2,000 = 136,184
Golden132,013 + 4,100 = 136,113
Bond16,552

Threshold unchanged at 144,813. No majority; eliminate Bond.


Round 3 — eliminate Bond; distribute G8 and G9

  • To Golden: +10,200 (G8)
  • To Poliquin: +4,700 (G9)
CandidatePre-exhaustion tally
Golden136,113 + 10,200 = 146,313
Poliquin136,184 + 4,700 = 140,884

Golden crosses the fixed threshold 144,813 → Jared Golden wins the Majority Seat.

No need to split exhausted ballots, as Golden already has a majority.

Majority Seat Voting Power Calculation

To calculate the voting power of the Majority Seat holder (Golden):

  • First-choice votes contributing to Majority win: 132,013
  • Second-choice votes for Golden (regardless of round):
    • G4: 1,342 → 2nd choice
    • G8: 10,200 → 2nd choice
    • G11: 4,100 → 2nd choice

Total second-choice votes for Golden: 1,342 (G4) + 10,200 (G8) + 4,100 (G11) = 15,642

Total voting power = 132,013 + 15,642 = 147,655

Percentage of total electorate = 147,655 / 289,624 ≈ 50.98%


Minority seat RCV process

Remove all ballots counted toward Majority voting power (Golden ranked 1st or 2nd). Remainder by origin:

  • G1: Golden not ranked → retained
  • G2: Golden not ranked → retained
  • G3: no Golden → retained
  • G4: Golden ranked 2nd → removed
  • G5: Golden ranked 1st → removed
  • G6: Golden ranked 1st → removed
  • G7: Golden ranked 1st → removed
  • G8: Golden ranked 2nd → removed
  • G9: Golden not ranked → retained
  • G10: no Golden → retained
  • G11: Golden ranked 2nd → removed
  • G12: Golden not ranked → retained
  • G13: no Golden → retained
  • G14: Golden ranked 1st → removed

Remaining groups: G1, G2, G3, G9, G10, G12, G13

  • Poliquin‑first remaining = 60,000 (G1) + 50,000 (G2) + 22,842 (G3) = 132,842
  • Bond‑first remaining = 4,700 (G9) + 1,652 (G10) = 6,352
  • Hoar‑first remaining = 2,000 (G12) + 775 (G13) = 2,775

Minority pool size = 141,969

Minority Round 1 — first-choice tally

CandidateVotes
Poliquin132,842
Bond6,352
Hoar2,775

Poliquin already exceeds 50% of the Minority pool; Bruce Poliquin wins the Minority Seat.


Narrative and verification notes

  • Exhausted ballots are ignored unless no candidate has a majority in the final round.
  • In this case, Golden already exceeds the threshold before exhaustion is considered, so no split occurs.
  • Golden wins the Majority Seat with 147,655 votes.
  • Poliquin wins the Minority Seat with 132,842 votes from the remaining pool.

Minority Seat Voting Power Calculation

  • Total electorate: 289,624
  • Majority Seat voting power: 147,655

Total voting power = 289,624 − 147,655 = 141,969

Percentage of total electorate = 141,969 / 289,624 ≈ 49.02%

Majority Seat voting power = 147,655 / 289,624 ≈ 50.98% → equivalent to 1.02 seats in office (out of 2) Minority Seat voting power = 49.02% → equivalent to 0.98 seats in office (out of 2)