I just spent an interesting half an hour reading up on the proposed electoral reform, from First Past The Post to Alternative Vote. I've pretty much always voted tactically due to the places I have lived and am thus very interested in a system that would allow me to vote for the candidate/s that I want. That said, it's not perfect. Make your own decision. But have a read of these websites first:
And if you fancy a chuckle, check out this thread on UKClimbing where opinions differ greatly!
Bottom line, make 10 minutes to learn about it and at least make an informed choice. It's important.