Over 140,000 people have signed up to the pro-independence campaign Yes Scotland.
The cross-party organisation, which is encouraging people to vote for independence in the 2014 referendum, said some 143,000 had now backed it - more than the number of Scots in political parties.
Yes Scotland chief executive Blair Jenkins hailed the support today as a "tremendous achievement this early in the campaign.
"We have lots of people who have never been involved in politics coming to us and putting their names down," he said.
Mr Jenkins warned there was still a long way to go until the referendum but the number of signatories "gives us great confidence for a positive result in the referendum.
"We've said from the outset that this will be the biggest campaign - a people's campaign - ever seen in Scotland and the numbers of voters getting involved supports that prediction."