I voted last week - and I'm so glad it came back no. 10 out of 10 councils rejected the vote, only 3 needed to for it to not go ahead.
The public transport here is so much worse than other places I've lived, the tram system doesn't' go to many of the main areas of Manchester never mind the surrounding areas. Even if you do need to use it, it's packed and expensive. Busses are the same unless you use one of the major routes (which, to be fair can be cheap and fast - i.e. Fallowfield > Piccadilly).
You might think because I winged about the public transport system I would be in favour, but the improvements are really negligible on the scale of things. The trams will still be jam packed so you can't get on in rush hour, and many of the most important extension areas are coming after the charge comes in to force.
I've used public transport for many years in Manchester, and it's only been the last 2 years that I've used the car. I personally wouldn't (generally) be effected by the congestion charge, as I travel in the opposite direction to the charging times... but many I know would.
The tube is soooooooo much better than the tram system, it actually goes places people want to go, it's a huge network, they are cheaper, run more often etc... If we had a system like that in place then they would stand a chance, but a disjointed network (ironically called integrated) in Manchester doesn't' have the same appeal. After looking at the TIF package, the new transport arrangements are a marginal improvement at one heck of a cost.
The main reason I voted against this is that if it comes into effect in Manchester, then it will happen in all the other big towns too. Inevitably, every time you want to go into another city there will be a charge. Surely if the public transport system and road infrastructure is inadequate it should be improved through general taxation/road tax as we all rely on it directly or indirectly. Having pockets of charging zones seems inefficient, unfair and counter productive. Putting a good enough transport system in place encourage people switch from cars to trains - wielding a big stick and a small carrot isn't going to convince anyone.
FWIW, the original London CC zone covered 8 square miles... the Manchester one is 80 square miles.