People behind NO = Tory's sleaziest backers, Rupert Murdoch and his media, Tax Payer's Alliance (who want to reduce taxes paid by business) and the BNP. Largely a tory campaign but enhanced by the more right wing.
David Cameron support No because of the wealthy backers, but was elected himself under AV and would have lost if the leadership election were First Past the Post. Just shows how duplicitous the guy is.
For me, the best reason to vote Yes is that it will destabilise the conservative party, and see camerons losing the faith of his party. The conservatives this time round are just not ready for government - they don't understand economics, they don't understand the will of the people or have the integrity to keep to manifesto policies. Best example is that they allowed universities to raise fees, which means the loan expenditure by the treasury will be £450million more than it was preeviously - so much for cuts! Dafties.
It shouldn't be get the tories out, it should be get the dafties out!!
FYI most countries in the world use someonthing other than First Past the post - it is the fastest declining election system in the world - we are backing a losing horse! FPTP 35 countries number of democratic countries - 150 or so...