The political make-up of the UK would look drastically different if votes in the General Election were measured in a more proportionate way.

A report by the Electoral Reform Society (ERA) revealed today showed if ballots were measured in different ways to the current first-past-the-post system, there could be up to 80 Ukip MPs and 20 Greens.

Here’s how the distribution of MPs currently looks after the first-past-the-post system (FPTP), where the candidate with the most votes in each constituency wins.

But if a proportional representation system had been used (where the votes count as a whole and are then distributed accordingly) the political map would be dramatically different – with Ukip taking 80 seats and the Green Party taking 20.

This shows how the UK might look if Nigel Farage and Natalie Bennett’s parties’ combined five million votes had equated to their proportion of the seats. Remember, with first-past-the-post they only got one seat each.

The ERA also considered how the map might vary with the alternative vote (AV), the mildest form of change. You may remember this being rejected in a 2011 referendum.

And it also looked at how MPs would be distributed with a single transferable vote (STV) system, a slightly more proportional system which would have given Ukip 54 seats.