The next Tory leader "won't keep the Union safe" by following Boris Johnson's blunt refusal to allow an IndyRef2, the country's top pollster has said.
Professor John Curtice claimed whoever enters Downing Street next month would be better off trying to persuade Scots of the benefits of remaining in the UK.
Liz Truss is the clear favourite to become the next Prime Minister and is expected to see off a challenge from fellow Tory MP Rishi Sunak.
