Victory Thresholds of RepresentationA variety of different formulas are used to translate votes into seats in full representation systems. For candidate-based systems – those systems that can be used in non-partisan races without parties – the threshold typically is established by the workings of the system rather than an electoral law. For these systems – cumulative voting and the one-vote version of limited voting -- and for the most common form of choice voting (with the "Droop" threshold), the thresholds to be guaranteed an opportunity to earn a seat are listed in the chart below. Note that in some circumstances candidates can win seats with a lower share of votes than this threshold, but can't be guaranteed such a win unless they win this share.
|Number of Seats in District||Threshold to Win One Seat |
|One vote more than:|
| 1 (winner-take-all)||50.0%|
These percentages are calculated using the following formula (known as the "Victory Threshold formula" or the "Droop" formula):
"Victory Threshold" =