What is Hare-Clark and how does it work?
Hare-Clark is named after the system's creators and implementors: Thomas Hare and Andrew Inglis Clark.
Hare-Clark is essentially a proportional election system in which
candidates from all parties run in a single election for a
constituency, and voters elect their members using a preferrential
ballot in which they rank the candidates from their most-desired to win
election as #1 to a certain number of preferences for their vote to
count (or even all candidates, with their least-preferred candidate
recieving the highest numeric number). Candidates who score a
quota (threshold for election) are elected immediately (and their
surplus votes distributed). Once no candidate has a quota, the lowest
candidate is eliminated and their votes transferred the voter's next
preference until another candidate gains a quota. The process repeats
until all seats are filled.
In the case of a mid-term resignation, a "countback" is performed by
excluding the resigning member and redistributing votes until another
candidate gains the quota the resigning member had.
Without going into the numerial mechanisms of Hare-Clark, in Tasmania
there are five electoral divisions, and thus five elections, each one
needing to fill five vacancies for their divisions. To win, a candidate
needs to win 16.7% (one sixth) of all votes cast to gain a quota and
thus be elected. For example, if Labor candidates gain two quotas,
Liberal candidates gain two quotas, Greens a half quota and minor
parties a half quota, Labor and Liberal will have two seats, and the
minor parties would be eliminated to determine the fifth and final
seat. For simplicity's sake, the Greens earn the fifth and final seat.
|