More than 4,000 members have joined Alex Salmond's Alba Party in the week since its launch, the party has said.
Founder Laurie Flynn said the milestone was surpassed on Friday afternoon, with membership numbers now at 4,100.
According to the party, its membership figure gives it more supporters than the Scottish Liberal Democrats.
The assertion is based on a listing of the party's membership on its Wikipedia page, which shows numbers at 4,085 as of December 2018.
He said: "Little did I think when I founded the party the impact that it would have.
"After exactly one week since our public launch, our membership has surged past that of the Liberal Democrats, a party which has been in existence for 1 50 years."
The Liberal Democrats were formed in the 1980s following a partnership between the Liberal and Social Democratic parties.
He added that Alba was "Scotland's new political force".
However, a Survation poll released on Thursday put the party at just 3% support with the more than 1,000 respondents.
The survey done for newspaper publisher DC Thomson also found that more than half of those asked believed Mr Salmond was detrimental to the cause of independence.
On Thursday, the former first minister said his party's membership figures are one of the reasons why it should be permitted into the leaders' debates, and refused to rule out taking legal action if Alba was not invited.
