Should they stay or should they go?
Today the United Kingdom votes on the so-called Brexit, or the possibility of leaving the European Union.
Polls opened at 7 a.m. local time (2 a.m. ET) and will close at 10 p.m. (5 p.m. ET). British citizens, including some who live abroad, are eligible to vote, as well as citizens of Ireland and Commonwealth countries who live in the U.K. or Gibraltar.
The votes (marked by an X on a paper ballot) are counted by hand, and official results likely won't be known until Friday morning.
Watching For Clues