Hi Xelgen,
last year we had a few of those situations (on the border between two countries, i.e. Estonia/Russia). It is not very common though, and I expect also this year it will be an exception.
Last year the bots etc didn't explode, but they might just skip part of the categorization (for example, only consider the first template they see, or the last one). You may have to do a little more manual work in those cases.
The voting tool is based on category input, so as long as you put it in the right country categories, it should work.
Lodewijk (not very technical, so just explaining to the extent he thinks to understand)