This is for anyone who wants to be a bit more active on election night rather than just listening to the pundits. You can be your own expert, and track for yourself what's going on. It is resolutely low-tech, but has been proved to be quite fun and copes well when results are coming in fast.
All you need to do is:
The sheets also keep track of marginal seats, including some high-profile seats which might have a surprise result.
The sheets also contain full instructions for use.