Original question: Oregon will be voting on the use of Ranked-choice voting in 2024, and I am preparing a presentation for interested local community groups to demonstrate how the process will operate. However, after doing my research, I still have a question about what I believe are called "exhausted" ballots.
If someone does not rank every candidate on their ballot and all of their votes have been "exhausted" in the tallying process, is that ballot then subtracted from the total number of ballots in subsequent run-off tallies? Or does it remain in the total count of ballots when trying to calculate if another candidate - one the person did not rank on their ballot - has reached a majority.
If it is the latter - that the exhausted ballot remains in the total count of ballots - doesn't it make it harder for another candidate to reach a majority+1 result?
Revision 1: Say I have an election with 5 candidates: White, Yellow, Orange, Green and Purple.
Here are the ballots:
Ballot(Yellow, Green, Purple, White, Orange)
Ballot(Purple, Green, Yellow, White, Orange)
Ballot(Yellow, Purple, Green, White, Orange)
Ballot(Green, White, Purple, Orange, Yellow)
Ballot(Green, White, Orange, Yellow, Purple)
Ballot(Yellow, Green, Purple, Orange, White)
Ballot(Orange, Yellow, Purple, White, Green)
Ballot(White, Orange, Green, Purple, Yellow)
Ballot(Orange, Green, White, Yellow, Purple)
Ballot(Purple, Yellow, Green, White, Orange)
Ballot(White, Green)
Ballot(Purple, Green)
Ballot(Green, Yellow)
Ballot(Purple, White)
Ballot(Yellow, Orange)
Ballot(White)
Ballot(Yellow)
Ballot(White)
Ballot(Green)
Ballot(Purple)
This type of voting is relatively new here, so some people did not rank all of the available candidates.
Here is the result of tallying the votes.
Round 1
Candidates, Total Votes, % (Total Votes / Total Ballots Count), % (Total Votes / Votes Cast in Round), Status
White, 4, 20%, 20%, Moves to next round
Yellow, 5, 25%, 25%, Moves to next round
Orange, 2, 10%, 10%, Dropped
Green, 4, 20%, 20%, Moves to next round
Purple, 5, 25%, 25%, Moves to next round
Votes Cast in Round: 20
Exhausted Ballots Count: 0
Total Ballots Count: 20
Round 2
Candidates, Total Votes, % (Total Votes / Total Ballots Count), % (Total Votes / Votes Cast in Round), Status
White, 4, 20%, 20%, Dropped
Yellow, 6, 30%, 30%, Moves to next round
Green, 5, 25%, 25%, Moves to next round
Purple, 5, 25%, 25%, Moves to next round
Votes Cast in Round: 20
Exhausted Ballots Count: 0
Total Ballots Count: 20
Round 3
Candidates, Total Votes, % (Total Votes / Total Ballots Count), % (Total Votes / Votes Cast in Round), Status
Yellow, 6, 30%, 33%, Moved to next round
Green, 7, 35%, 39%, Moved to next round
Purple, 5, 25%, 28%, Dropped
Votes Cast in Round: 18
Exhausted Ballots Count: 2
Total Ballots Count: 20
Round 4
Candidates, Total Votes, % (Total Votes / Total Ballots Count), % (Total Votes / Votes Cast in Round), Status
Yellow, 7, 35%, 44%, Lost
Green, 9, 45%, 56%, Elected?
Votes Cast in Round: 16
Exhausted Ballots Count: 4
Total Ballots Count: 20
It seems that in Round 4, Green won the election with 9 votes, which was 45% of the total ballots (or 56% of the total votes cast in the round).
So I am confused as to which percentage is used in ranked-choice voting, the (total votes / total ballot count) or (total votes / votes cast in round). If it is the (total votes / total ballot count) version, then it seems to me that the number of exhausted ballots continue to have an outsize effect on the percentage and make it harder for a candidate to get a majority+1 of the votes cast as the process goes through more rounds.
Apologies if this question seems simplistic, but I'm just trying to get my head around it... Thanks!