Since Scots voted down independence, 55 percent to 45 percent, the Scottish National Party has grown enormously with many Scots getting politicized by the bitter campaign. With some 25,000 members in September 2014, the party now has more than 125,000. A second referendum would probably put the independence camp in a better position than three years ago, when young people voted heavily to leave, and a British exit from the European Union seemed highly unlikely. But while Scots voted to remain in the European Union last June by 62 percent to 38 percent, that has not translated easily into support for independence, with about a third of those favoring independence also voting for a British exit.
https://www.nytimes.com/2017/04/01/world/europe/brexit-scotland-independence-vote.html