OK listen carefully. The problem with politics is (I agree) that there are never any good candidates you really want to vote for. Why not? Well here's the trouble: imagine you have brilliant ideas and want to be a politician. You have two choices right? You could spend 20 years sucking up to one of the major parties even though you disagree with most of their policies and think their leaders are a bunch of corrupt dickheads. OR you could run as an independent or part of a smaller party (maybe your own, new, party) with a list of policies you actually want.
But here's the problem. Option one won't get your brilliant ideas into politics. It will just waste your life working for stuff you don't believe in.
But option two is worse. If you stand for election under the current system (FPTP or first past the post) you will simply split the vote for the party who is nearest to you. So lets say you're against student top-up fees. People now have to choose between you (no top-up fees), a "reduce the top-up fees" candidate, a "keep the fees the same" candidate" and an "increase the fees" candidate. So every vote you get is one less person voting "reduce the fees" or "keep the fees the same" and good news for the "increase the fees" candidate. In fact running as a candidate yourself significantly increases the likelihood that the ultimate winner will be someone who you completely disagree with.
However with AV your supporters can vote for you #1 and maybe that's enough to win and they can put "reduce the fees" #2, and "keep the fees the same" at #3. What they're saying is "if I can't have exactly what I want, I'd like the nearest thing available". Which should surely go without saying.
And importantly it means that new and independent candidates are encouraged to stand. Bringing more ideas into the system and giving us all more choice and more likelihood of finding a candidate we do believe in! And you can vote for them without "wasting" your vote. So you don't have to resort to "tactical voting" to keep hated parties out! You can actually vote for who you want to win and put your tactical choices as #2, #3,...
It's loads better than the current system. You should support it.
*not necessarily a fan of mine.