An interesting idea from the Guardian; you can get the name and address of a (presumably undecided or swingable) voter in a key constituency and write them to give your view. Here.
Who knows, it might even make a difference. My prediction is that the election will be undecided 48 hours after the vote has finished and it will all end up in the courts again. Partly, this will be because it is so close, but also because I suspect that the idea of “Her Majesty’s loyal opposition” (which is a pretty odd concept in historical terms) — a preparedness to accept you will lose power and gain it again in due course — has broken down in the US, at least among Republicans.
About