The BBC Election Swingometer Through The Ages
And the rest of the BBC's election coverage, but we know what really matters.
The BBC's studio for covering the general election is as fancy as you'd expect.
It's even set up a huge map of the UK outside Broadcasting House showing all the constituencies.
The Tories were represented with white and Labour with black because a) this was before colour TV, and b) there weren't any other parties that mattered.
There was also a very lo-fi method of totting up the scores.
This is from Broadcasting House in 1951.