We should, at any rate, expect the polls to narrow as the referendum approaches. The SNP is a formidable, well-resourced campaigning machine, while the energy and enthusiasm of the activists on the Yes side far outstrips that of their unionist counterparts. Moreover, it has happened before. Contrary to Nate Silver’s recent assertion, it was the Canadian federalists, not the Quebecois separatists, who squandered a double-digit advantage during the closing weeks of the 1995 referendum on Quebec’s independence from Canada. It’s not hard to imagine a similar scenario emerging in Scotland next year.