Cumulative Voting Calculator
See how many board seats a bloc of shares can guarantee under cumulative voting, and how many shares it takes to elect each seat. Built for corporations, co-ops, and HOAs that elect directors by cumulative vote.
Your Election
What You Can Win
Your bloc can guarantee
2 / 7
seats with 300 shares (2,100 total votes)
Shares to guarantee one seat: 126
| Seats | Shares needed |
|---|---|
| 1 seat | 126✓ within reach |
| 2 seats | 251✓ within reach |
| 3 seats | 376 |
| 4 seats | 501 |
| 5 seats | 626 |
| 6 seats | 751 |
| 7 seats | 876 |
How cumulative voting math works
Under cumulative voting, each share gets one vote per open seat, and you can pile all of those votes onto a single candidate instead of spreading them. A holder of 100 shares in a 7-seat election controls 700 votes and can put all 700 behind one nominee. That concentration is what lets a minority bloc win representation it could never get under straight (one-vote-per-seat) voting.
The formula
The shares needed to guarantee electing a given number of seats is (seats you want x total shares voting) / (total seats + 1), plus one share. With 1,000 shares voting for 7 seats, one seat takes 1,000 / 8 + 1 = 126 shares. The calculator runs this for every seat count so you can see exactly where your bloc lands.
Cumulative voting vs. straight voting
In straight voting, whoever controls a majority of shares can elect every seat, so a 51 percent holder sweeps the board and a 49 percent minority gets nothing. Cumulative voting changes that: the same 49 percent bloc can concentrate its votes and lock in several seats. It is the standard tool for protecting minority shareholders and members.
Cumulative voting questions, answered
Cumulative voting is a method of electing a board where each share (or member) receives one vote per open seat and may concentrate all of those votes on a single candidate. By piling votes onto fewer candidates, a minority bloc can guarantee itself representation it would never win under ordinary voting.
Multiply the shares you control by the number of seats up for election to get your total votes. You can split those votes among candidates however you like, including putting all of them on one nominee. The shares needed to guarantee a seat are (seats desired x total shares voting) / (total seats + 1), plus one share. The calculator above does this for every seat count.
In straight voting, each share casts one vote per seat and cannot concentrate them, so whoever holds a majority elects every seat. In cumulative voting, votes can be concentrated, so a minority bloc can lock in one or more seats. Straight voting favors the majority; cumulative voting protects the minority.
Use the formula (1 x total shares voting) / (total seats + 1) + 1. For example, with 1,000 shares voting for 7 seats, electing one director takes 1,000 / 8 + 1 = 126 shares. Electing two takes 251, and so on. Enter your own numbers in the calculator to see the full table.
Cumulative voting is common in corporate director elections (it is required or permitted by statute in several states), and it is used by some cooperatives, credit unions, and HOAs to protect minority members. Check your bylaws or articles to confirm whether your organization elects directors by cumulative vote.
Yes. vote.direct runs cumulative voting elections directly: voters distribute their votes across candidates, the platform tabulates the results, and every ballot is identity-verified with a full audit trail. You can set it up the same way you would any other election.
Run a cumulative voting election
vote.direct supports cumulative voting out of the box: voters distribute their votes, results are tabulated for you, and every ballot is verified. Starting at$4.99/election.