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People in Scotland are voting on whether the country should stay in the UK or become an independent nation.
Voters will answer "Yes" or "No" to the referendum question: "Should Scotland be an independent country?"
With 4,285,323 people - 97% of the electorate - registered to vote, it is expected to be the busiest day in Scottish electoral history.
Votes will be cast at 5,579 polling stations until 22:00 on Thursday. The result is expected on Friday morning.
Strict rules mean the BBC - in common with other broadcasters - is not allowed to report details of campaigning until after the polls close.
Additional story and photos at: http://www.bbc.com/news/uk-scotland-scotland-politics-29238890
Live streaming audio BBC Scotland at: http://www.bbc.co.uk/radio/player/bbc_radio_scotland
Live streaming audio BBC World Service at: http://www.bbc.co.uk/worldserviceradio
