An electoral system that could reduce the need for such a pact would be
a ranked voting methods, such that Unionists could rank their preferred party 1 and the other Unionist party 2, or that a progressive voter could, for example, rank Green / Labour / Lib.
Not exact matches
It is not (strictly speaking) a party - list
voting system, but the
method used to elect the Australian Senate operates somewhat like a
ranked choice party - list system in practice.
STV is the system of choice of groups such as the Proportional Representation Society of Australia (which calls it quota - preferential proportional representation), [2] the Electoral Reform Society in the United Kingdom [3] and FairVote in the USA (which refers to both STV and instant - runoff
voting as
ranked - choice
voting, [4] although there are other preferential
voting methods that use
ranked - choice ballots).
For some people,
ranked - choice
voting means any
voting method where voters
rank candidates.
[46] James Green - Armytage tested four
ranked - choice
methods, and found the alternative
vote to be the second - most - resistant to tactical
voting, though it was beaten by a class of AV - Condorcet hybrids, and did not resist strategic withdrawal by candidates well.
A number of electoral systems use single - member districts, including plurality
voting (first past the post), two - round systems, instant - runoff
voting (IRV), approval
voting, range
voting, Borda count, and Condorcet
methods (such as the Minimax Condorcet, Schulze
method, and
Ranked Pairs).
The independence of Smith - dominated alternatives (ISDA) criterion is much weaker than IIA; unlike IIA, some
ranked - ballot
voting methods can pass ISDA.
Phil knew of Arrow's impossibility theorem: that it is impossible to develop a democratic
voting method that provides a consistent overall
ranking from individual preferences in all situations.