British voters head to the polls Thursday to vote in their first general election in five years. With polls predicting a close race and no clear majority, it will likely be days, if not weeks, until we know who the prime minister will be.

Polls in the United Kingdom close at 10 p.m. local time, with the first results announced around 6 p.m. EDT Thursday. Unlike in the United States, the winner in each district will be announced only once all the votes have been counted. Results will continue rolling in overnight, with all but seven constituencies expected to announce results by 2 a.m. EDT.