basically, the people opposed to changing the voting system is the old cartel of tory and labour mps who have carved up parliament between them over the last 100 years, a very cosy situation for them which means that vast numbers of voters are effectively disenfranchised in safe seats eg the small towns, countryside & suburbs being owned by the tories and the inner cities, the north, wales & scotland effective labour fiefdoms. The AV system is actually the mildest form of PR on offer and doesn't go nearly far enough and is hardly likely to change the landscape that much so the fierce opposition to even this modest constitutional change shows how far we still are from a modern system that actually reflects the people of the country. Both main parties have reached office on barely 30-40% of the national vote for years which means 60-70% of people currently have ZERO voice in government. It's a scandal and sadly, most people are too thick to realise that they are just cannon fodder, pawns, occasionally noticed every 5 years. It is vital we embrace any modernisation, no matter how piecemeal it is. + if you're green, independent, libertarian, somebody who thinks outside the old left-right compass (eg like me) then this could be the only chance you get for some kind of represention. Otherwise, it is business as usual and more of the same old vested interests & corrupt politics. You willl hear loads of scare stories about government paralysis, how we would have elections every 3 months, how we'd become Italy etc. It's bull - the snp minority govt didn't collapse and the tory-lib deal for all its faults has produced functioning govt. Vote YES, because you'll probably never get another chance