DO NOT incorrectly assume that this is a pattern of reversing nationalism.
The UK Labor party has won a majority; but also after a 4+ yr campaign of purging actual socialists.
The French Right has fallen short of a majority; but France has one of the most vocal ACTUAL left wing populace in Europe.
Yeah there really is no reason for this NewLabor 2.0 to be successful beyond its commitment to never making a commitment and the Tories fumbling a decade of power.