The first two maps here should the winning party and the runner up in each constituency. Further down, we exploe visualizing the the size the majority.
Here are two ways of visualizing the size of the winning majority in each area. On the greyscale map, we show the difference between the number of votes achieved by the winner and the runner up. On the orange-purple map, we show the overall majority, i.e. the difference between the number of votes received by the winner and all other validly cast votes in the constituency. Under a first-part-the-post electoral system, of course, the winner need not have an overall majority, so here we use shades of purple to show positive overall majorities (where the winner did poll more than all others combined) and shades of orange to show areas in which the winner had only a minority of the votes.
