Offtop, but interesting:
The results of the last parliamentary election in Germany
almost perfectly recreated - after about 35 years - the historical division
into West Germany (the Federal Republic of Germany - Bundesrepublik
Deutschland, BRD) and East Germany (the German Democratic Republic
- Deutsche Demokratische Republik, DDR).

https://theins.ru/en/politics/279368

Historical divisions are also reflected in election results
in other European countries, e.g. in Spain and in Poland.