@Pureferret Instant Runoff aka Ranked Choice is generally considered a very good system precisely because it prevents the spoiler - effect and leaves practically no
options for tactical voting.
And it has the additional benefits of eliminating the need
for tactical voting while conferring greater democratic legitimacy on the elected MP.
Despite all these efforts, and as today's Survation poll underlines, the SNP's lead may be too
big for tactical voting to make any real difference.
Appeals for tactical voting have emerged from two opposite ends of the Scotland's political spectrum, from one of the most vulnerable figures within the Tory - Lib Dem coalition — Danny Alexander, and from Scotland's most famous socialist, Tommy Sheridan.
That's why Dr. Roger Mortimore from Ipsos MORI has said: «Under AV there is a real
incentive for tactical voting, because the order in which candidates are eliminated affects the result».
In 1997 though it became a close Conservative / Lib Dem marginal and since then a
haven for tactical voting — at subsequent elections both the Conservative and Lib Dem vote shares have risen as the Labour vote is remorselessly squeezed.
On the one hand, coalition government has massively boosted the
potential for tactical voting: it's made many Conservatives comfortable backing Lib Dems and vice versa.
While the scheme would retain the first - past - the - post principle, and still
calls for tactical voting, it would ensure a fairer distribution of seats in relation to parties» shares of the vote.
Proponents of other voting methods in single - member districts argue that these would reduce the need
for tactical voting and reduce the spoiler effect.
If voters strongly associate a small party with one of the major parties — and an electoral pact or formal call
for tactical voting would be a clear signal — they will believe a vote for the small party is effectively a vote for a government led by its proximate major party.