A post of mine from 2015:
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On the occasion of the death of Denis Healey,
http://www.bbc.com/news/uk-politics-34434378 I would like to review the question of what would have happened if he had defeated Michael Foot for the Labour Leadership in 1980. (Remember, 1980 was the last time the Parliamentary Labour Party chose the Leader.)
The vote on the second ballot was quite close--139 to 129.
https://en.wikipedia.org/wiki/Labour_Party_(UK)_leadership_election,_1980 A change of six votes would have made Healey the Leader of the Labour Party. According to Ivor Crewe and Anthony King in *SDP: The Birth, Life and Death of the Social Democratic Party* (Oxford UP 1995), p. 75, the votes of a few right-wingers who were already planning to leave the party--and who wanted Labour to choose the most left-wing possible leader (in the absence of a Benn candidacy) in order to weaken the party--were crucial to Foot's victory. They quote one MP as saying
"It was dirty politics. I admit it. I--and I reckon quite a few others--thought that Foot had to be elected in order to convince the waverers that the game was up and that we had no choice but to move. I was particularly concerned about Shirley [Williams]; if Healey had won, I still think she wouldn't have come over."
To find how typical this MP was, Crewe and King questioned all the living Labour MPs who had defected to the SDP "and asked them...to tell us in confidence whom they had voted for in each of the two ballots in the 1980 election. Most of them replied. Most said they had voted for Healey on both ballots, and many of them were obviously surprised that we should even have asked the question. But five, whose names we cannot reveal, including the MP just quoted, acknowledged that they had voted for Foot, in the second ballot if not the first. One of them added: 'I voted for Foot because I thought he would make the worst leader for Labour, not only in a personal capacity but also because he was nearest to the left.'
"In other words, we know that enough of those who subsequently deserted Labour for the SDP voted for Foot to have produced a tie in the election. We expect that at least one other did so. If he did, he would have produced the margin by which Foot won. If our findings are correct, Foot was indeed the left's candidate in the leadership election, but he was also the candidate of a crucial minority of the future SPD. He was the product--and Labour the victim--of what the French call *la politique du pire*, the politics of the worst."
So my POD is that the Labour right wing votes unanimously for Healey. Or, if it be objected that by 1980 it is implausible that *no* Labour right- wingers would play *la politique du pire* and vote for Foot, let's say that only three did so, instead of six, and that in addition three centrist Labour MPs voted for Healey instead of Foot. Anyway, Healey wins. Consequences? The formation of the SDP is at any rate delayed. Jenkins and a few Jenkinsite MPs might leave Labour anyway, but the Gang of Three, and most of those who followed them, would not. The question is how Healey would have used the time this would buy for Labour. Crewe and King suggest that Healey would not have fought the left aggressively as Gaitskell had done, but would be more of a compromiser like Callaghan--and that if he had tried to fight the left aggressively, he would have lost. In either event, there would be a party split--one which, though delayed, might actually have ultimately taken more Labour MPs out of the party than in OTL.
Indeed, one admittedly biased source actually suggests that the defeat of Foot would open the way for Tony Benn to become Labour Leader! (Which sounds more plausible to me now than it would have before Corbyn's victory, though admittedly that took place under one-person one-vote rather than under an electoral college). "If Healey had won, a challenge under the new rules might have been unstoppable, and once the choice lay with a broader-based electoral college, Benn might have won."
https://books.google.com/books?id=lIM_b98LgdIC&pg=PA189
Anyway, let's say a Labour split can at least temporarily be avoided. Does Healey stand a chance against Thatcher in 1983, or does the "Falklands factor" guarantee a Conservative victory, even if not by the same margin as that against Foot in OTL?
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Another post of mine (from 2020):
I know that a lot of people think that Healey was the best PM the UK never had but his son disagrees:
https://independentblogposts.wordpress.com/2017/12/31/denis-healeys-son-my-father-would-have-made-a-rubbish-pm/ ("I think my father would have made a rubbish prime minister. He was not clubbable enough; never bothered to nurture a coterie of supporters. And, suffering fools not gladly he could privately be very diminishing about people who were in his own camp. Dad’s supreme confidence in his own judgements, forged in that mighty, double-first Balliol man’s brain, meant that he lacked the simpler chairman-like skill of listening to other people.")