Seat Apportionment Calculator illustration

Seat Apportionment Calculator

Distributes parliamentary seats from party vote counts under five rules at once: D'Hondt, Sainte-Laguë, modified Sainte-Laguë (1.4 first divisor), and largest remainder with the Hare and Droop quotas — with an optional electoral threshold and the effective votes per seat for every party.

Parties below this share of the vote get no seats.

Notes

  • All five methods are computed exactly. Highest-averages methods (D'Hondt, Sainte-Laguë) hand out seats one at a time to the party with the largest next quotient; largest remainder first gives each party its whole quotas, then distributes what is left by the fractional remainders.
  • D'Hondt systematically favours larger parties; pure Sainte-Laguë is close to proportional; the modified 1.4 first divisor makes the very first seat harder to win for small parties.
  • Rare ties in quotients or remainders are broken in favour of the party with more votes, then by input order.