The bounds of votes of divisor electoral methods

Tomislav Marošević (), Josip Miletić () and Marija Miloloža Pandur ()
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Tomislav Marošević: Josip Juraj Strossmayer University of Osijek
Josip Miletić: Josip Juraj Strossmayer University of Osijek Kneza Trpimira 2B
Marija Miloloža Pandur: Josip Juraj Strossmayer University of Osijek

Central European Journal of Operations Research, 2023, vol. 31, issue 4, No 11, 1265-1280

Abstract: Abstract In proportional electoral systems, party vote counts must be converted to seat allocations within a parliament of fixed size. Divisor methods are the most common approach to this problem, but different divisor methods often give different seat allocations. To highlight these differences, the effects of various divisor methods on a party’s seat allocation are expressed as intervals of the party’s vote count within which the seat allocation is unchanged, assuming other parties’ votes are fixed. These bounds are applied to data from four recent European parliamentary elections, as well as one hypothetical dataset.

Keywords: Voting; Proportional representation; Allocation of seats; Divisor methods (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1007/s10100-023-00855-3

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