Most people in politics really dislike LibDem campaigning tactics; and of all of them, the way that they claim to be able to win in every ward, division, council or constituency in the country irrespective of the previous results, is the biggest irritant. Bar charts being flung here and there - if you stats don't prove your point, use a dodgy scale that will or even in some cases use stats from a completely different area!
But now I think the mantle for bonkers claims of electoral success should be handed onto the Green Party. With their massive tally of ... erm ... 1 MP they are now predicting big gains in the Scottish Parliament including winning seats in every region (see here). Most people in the country aren't even bothered by the Greens but here in Norwich we've had years upon years of idiotic claims of them about to make an historic breakthrough (that never happen). Be it the parliamentary seat or the local council, there is no claim too big for them to make.