Three main factors: as to why Labour won
1) Tory govt had become so bad, so loathed, that people wanted a change. Tactical voting websites were promoted to vote for person most likely to beat a Tory.
2) Reform UK won 14% of national vote and took a lot of their vote from Tories.
3) UK's 'first past the post' voting system is corrupt. Labour won only 33% of national vote, yet got 412 seats our of 650, which is 63% of seats.
Reform won 14% of national vote, but only received 5 seats - 0.7% of seats - corruption personified.
And I heard a lot of people who didn't want Blue (Tory) or Red (Labour). They are a Uni Party, passing leadership baton to each other at elections, whilst their big business oligarch funders, paymasters, remain the same.