Winner has to achieve overall majority to
gain a seat
How does it work?
Voters rank candidates in order of
preference
First choice votes counted
If a candidate has gained 50% of the vote,
they're elected.
If none of the candidates have gained a majority, the
second choice votes are taken into account
The top two candidates retain their first
choice votes
But all other candidates are eliminated and their
second choice votes for the two leaders are
counted
The final totals of the two remaining candidates will produce an
outright winner
Advantages
All MPs would have the support of a majority of their voters
Retains same constituencies - no need to redraw boundaries
No observable erosion of the constituency - MP link
Penalises extremist parties, as they're unlikely to gain
many second choice votes
Reduces need for tactical voting
Voters can vote for first choice without fear of
wasting their vote
Reduces number of "safe seats"
Encorages candidates to chase second and third
preferences, which lessens the need for negative campaigning
One party doesn't want to alienate supporters of other candidates whose
second preferences they want
Disadvantages
Not proportional representation
Certain electoral conditions (landslides) can produce a
more disproportional result than FPTP
In close three-way races the "compromise" candidate could be
defeated in the first round even though they may be more broadly
acceptable to the electorate than the top two candidates
Lower preferences can potentially produce a "lowest common denminator"
winner without much positive support of their own
Donkey Voting - voters vote for vandidates in the
order they appear on the ballot