At least for Germany that is not true most of the time. If you vote in your home constituency it is normally enough to show your Wahlschein (letter that show that you allowed to vote and where).

Just re-checked: In theory you can buy raw milk in Germany in a supermarket. It is called “Vorzugsmilch” then. But I never saw any.

Seeing the other post about France: It depends on the country. In Germany you can’t (only direct at the farm). Saw a documentary some weeks ago about Spain where they said that it is also forbidden (the journalist wanted to drink raw camel milk).