polling place vs voting station

polling place

noun
  • A place where voters cast their ballots in elections. 

voting station

noun
  • A public place, normally used for some other function, that has been authorized for the registering of votes in an election; it will contain voting booths and officials with an up-to-date electoral register or similar list of voters; a polling station 

How often have the words polling place and voting station occurred in a corpus of books? (source: Google Ngram Viewer )