From Longman Dictionary of Contemporary Englishpolling boothˈpolling booth noun [countable] British EnglishPPV a small partly enclosed place in a polling station where you can vote secretly in an election
Examples from the Corpus
polling booth• But as before, their influence over the voters' mood ended well before the polling booth.• They felt sure that at the moment of truth in the polling booth most voters will consider their wallets.• In the polling booth, the voter marks his favourite candidate number one, his next best number two and so on.• But, in the privacy of the polling booth, cooler and more hard-headed calculations came into play.• We can not expect voters to leave their conscience behind them when they go to the polling booth. 