UK General Elections with alternative party leaders

How would each of the following elections have turned out? The alternate leaders are in bold, with an explanation in brackets. Each election has it's own POD.

1959 - Harold Macmillan (Conservative) vs. Aneurin Bevan (Labour) (succeeded Clement Attlee in 1955) vs. Jo Grimond (Liberal)

1979 - James Callaghan (Labour) vs. Ted Heath (Conservative) (having survived the 1975 leadership challenge) vs. David Steel (Liberal)

1987 - Roy Hattersley (Labour) (Succeeded Michael Foot in 1983) vs. Margaret Thatcher (Conservative) vs. Shirley Williams (Succeeded Roy Jenkins in 1983)/David Steel (Alliance)

1997 - John Redwood (Conservative) (defeated John Major in the 1995 leadership challenge) vs. John Prescott (Labour) (Won the leadership in 1994 after Blair declined to stand) vs. Paddy Ashdown (Liberal Democrats)

2005 - Michael Portillo (Conservative) (Won the leadership in 2001) vs. Tony Blair (Labour) vs. Charles Kennedy (Liberal Democrats)
 
I don't by any means know much about this, but I would say that the Tories would still win in '59 and '87, and Labour would still win in '97.
 
Here are my PV estimates for each of them. Changes on OTL are in brackets.

1959 - Conservatives - 49% (nc), Labour - 41% (-3), Liberals - 9% (+3) - Some Butskellite Labour supporters switched to the Liberals, allowing Macmillan's Tories to win a somewhat bigger majority.

1979 - Conservatives - 40% (-4), Labour - 36% (-1), Liberals - 20% (+6) - Hung parliament. After the WOD, the Liberals remind voters of Heath's previous premiership and get a lot of votes that went to the Tories in OTL.

1987 - Conservatives - 39% (-5), Labour - 33% (+2), Alliance - 26% (+3) - Smaller Tory majority. Hattersley and Williams are more popular with the public than Kinnock and Owen.

1997 - Labour - 38% (-5), Conservatives - 31% (nc), Liberal Democrats - 22% (+5) - Ashdown comes across as a better leader and has more charisma than Prescott and Redwood. The "time for change" message still wins though. Labour majority of around 50. More Liberal Democrat seats.

2005 - Conservatives - 36% (+4), Labour - 35% (nc), Liberal Democrats - 18% (-4) - Big swing to the "modernized" Tories in the LD-Tory marginals. Probably a hung parliament. Labour still easily the largest party in seats.
 
Erm, if Blair declined to stand in 1994, isn't it fairly obvious Gordon Brown would become leader?

In this POD, it was a two-way race between Prescott and Brown. Beckett also declined to stand, so the left-wing vote was more united. Prescott managed to win very narrowly.
 
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