Andy Burnham, a senior Labour politician, won a special election in Makerfield on 18 June 2026 with a majority of more than 9,000 votes. The result, announced at 3am on 19 June, signals the beginning of a potential fight for control of the Labour Party. Burnham, 56, was previously the elected leader of the Greater Manchester region and is now seen as a credible challenger to Prime Minister Keir Starmer.

The special election was called because the previous MP, Josh Simons, resigned. Burnham's supporters are talking about installing him as Prime Minister within days, according to The Guardian.

Can He Actually Replace Starmer?

Starmer has said he will not resign and will fight any challenge, per the New York Times. The problem for Burnham is procedural. Under Labour's rules, a leadership election can only happen if the current leader steps down, or if 20 per cent of Labour's MPs vote to challenge him. With Labour's current numbers in Parliament, that means Burnham would need about 80 MPs to nominate him. That is a high bar to clear, and Burnham has not yet publicly secured those nominations.

So while the election win is impressive, it does not automatically force a leadership change. Many Labour MPs are unhappy with Starmer, but they have to take formal action to remove him — and so far, they have not.

What the Numbers Tell Us

Nigel Farage, leader of Reform UK, suggested people voted against Starmer rather than for Burnham, per the BBC. There is some truth to this. When the government is unpopular, voters in safe seats often back any candidate seen as alternative. But a 9,000-vote margin also suggests Burnham has real personal support in the North of England, not just protest votes against Starmer.

One practical point: Burnham's win shows Labour can still beat Reform UK at the ballot box. That has been in doubt recently as the government's popularity has fallen. For Labour MPs worried about keeping their own seats, that message matters.

A Party Divided on Who He Is

Not everyone on Labour's left is backing Burnham. Jeremy Corbyn, a former party leader, criticised him for accepting spending cuts, according to The Guardian on 20 June 2026. During his years running Greater Manchester, Burnham managed budgets carefully within tight limits. This appeals to centrist MPs but worries those further to the left.

Burnham also has not demanded Starmer's immediate resignation, instead talking about policy change. Whether this is careful strategy or a sign he knows he does not yet have the votes, is not clear.

What is clear: the by-election has changed Labour's landscape. Before this win, dissatisfaction with Starmer had no obvious alternative leader. It does now.