Ukrainian electoral geography


Why is it there such a strong correlation between the geographical distribution of political party support in the Ukraine and historical boundaries? The border between the Orange parties and the Blue looks just like the border of the Polish-Lithuanian Commonwealth four hundred years ago, and the bit of the country (Subcarpathian Ruthenia) which used to be in Czechoslovakia and Austria-Hungary maps almost exactly to the area which supports Yushchenko's Our Ukraine party.

(I assume anyone reading this blog will know the historical boundaries from memory, but have included a link to the election map)