This is the legacy of protest votes: None of the proposed theories of change change anything. Boycotts don’t work, since non-voting is a normal case. Defection elects the greater of two evils from the voter’s point of view — and that’s if it works — while doing little to the parties. And victory never happens; not one third-party candidate has ever won, or come close. Advocates of wasted votes don’t bring up this record of universal failure, because their votes aren’t about changing political results. They’re about salving wounded pride.
There’s No Such Thing As A Protest Vote
Clay Shirky
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In one paragraph, this sums up the whole issue. Incredible.