Back in 1991 when I was first learning C language on my Atari ST I wrote a program to study the results of the 1987 UK General Election.  This year I have been developing a new program to analyse all the Election results from 1945 to the present day.  Here are some screenshots from the program:

Its turned out really well, and I'm especially pleased with the SVG map which updates in real time (i.e. when zooming in or out and for dragging the swing sliders).

Although I wrote the program and created the maps myself I compiled the election results from these sites: