"they get heated in their defence of the party they support"

Sorry Fred but that is not happening here. The only thing people are getting heated about is what is right and what is wrong whicher party is doing it. Yes, they have all done things differently to their manifestos and that is wrong but to use that as an excuse to shirk the responsibility to vote is equally wrong. Our forefathers fought hard for the right to determine our own governance. Without that right we would have never been able to vote for those who gave us decent working conditions, pensions and the NHS. You don't like the main parties. That's fine. Vote Green. Vote independent. But for heavens sake don't give up the hard won right to vote. And don't fall for the populist line spun by deform :-D