SNP leader Alex Salmond has urged the "missing million" unregistered voters to make sure they can have their say in the upcoming independence referendum.
Scots have until midnight tonight to register for the referendum, which will see 16 and 17-year-olds allowed to vote for the first time in a major poll.
The First Minister said: "If you have friends or family who want to vote and are not registered, they have just hours to do so - this is their last chance to seize the wealth of opportunity offered by Scotland's historic referendum."
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An investigation has been launched after listings appeared on eBay offering to sell votes in the upcoming Scottish independence referendum.
Bounce for leaving the union following second debate this week, but only 43% expected to vote yes in referendum on September 18