Many of my colleagues in the “University Left” felt we’d been robbed by the AV system but I remember arguing it was a fair result. The problem wasn’t the voting system but the fact we hadn’t persuaded 50% of voters to back me in one of their preferences.

That is still what I believe today and so I will be voting Yes this week. To me, it would be worth it simply to see an end to tactical voting. Each of us will be able to express our preferences, which could itself send messages to politicians. For example, an MP who only got in thanks to the transfer of Green voters might reflect that in the policies they support.

But best of all is that it will both help smaller parties get established with no fear of ‘wasted votes’, at the same time as making it harder for extremists to get elected (as voters are unlikely to transfer to them). A more fluid electoral system, with parties like UKIP or the Greens finding it easier to make an impact, would seem to me to make for a more flexible and responsive politics.

It is true that it isn’t proper proportional representation but that is a different issue. This vote is not about PR. it is about whether who is elected an MP should reflect the majority of those who vote and whether I can simply vote for my actual preferences rather than working out where my vote could have most effect.

For a really interesting alternative though, we could try the Approval Voting System used by the Mathematics Association of America. Under this you vote for as many candidates as you like indicating all those you would be happy to see as your MP. The winner is the one with the highest overall approval, and you can have many candidates getting more than 50%. That could really change who gets elected in the UK.