I have written about how (apart from the Goldwater exception) from the 1950s through the 1980s, the Republican Party could count on California to give it a huge starting edge in Presidential elections and indeed provide many party luminaries as well, but now the state is a dead loss for the GOP from Day 1 in Presidential contests.
That’s the experience of UK Labour with Scotland, where the party was founded and where it drew many of its leaders for decades. Over the past half-century, it’s been close to a pocket district for Labour which enabled the party to overcome relatively greater Tory support in England. This chart from The Economist is illuminating: without Scottish support Labour would have been out of power all but 8 years over the last half century.
If Labour can’t woo back Calendonia, they will have to get used to more thrashings like they took the past two cycles.