(sorry about the colors not matching)
Shoutout to !europe@feddit.de for people curious about the reasons behind the votes differences: https://lemmy.zip/post/17100617 (you can copy paste this link in your search bar to get it, I would usually provide a feddit.de link, but the instance front-end is still down)
So quick info, who are these parties and any idea why (and with how much coincidence) this divide exists?
AfD is Alternative fur Deutschland, a far right party. This divide is present ever since the division of Germany into East and West Germany and persists to this day despite the fact that the wall fell in 1989. It is definitely not coincidence that there is a political and demographical divide.
Looks like the soviets did a poor job of raising the east.