Hah, I've had the good fortune of genuinely believing in New Labour since I started voting, but most people I know do indeed vote for "least worst"... Thing is, even if we had PR, I'd still vote Labour over a hypothetical 3rd party that more accurately represented my views, if voting Labour had a strong chance of keeping the Tories out. Then again, there's more chance that 3rd parties would be able to hold the balance of power in PR via coalitions than in FPTP, so maybe I'd be more inclined to vote for one... So yeah, I'd call it an artefact of FPTP. If only we hadn't rejected AV, then I wouldn't mind throwing a vote behind a 3rd party if I knew that my 2nd choice would be activated when it came to the finish line...