Andy Burnham has returned to Westminster after winning the Makerfield by-election on 18 June 2026, immediately fuelling speculation that he could become the next leader of the Labour Party.

Burnham secured 54.8% of the vote, winning the constituency with a majority of 9,231 votes on a turnout of around 58.7%. The result comfortably held the seat for Labour and returned one of the party's most recognisable figures to Parliament for the first time in almost a decade.

The victory marks the end of Burnham's long absence from Westminster and gives the Greater Manchester Mayor a direct platform in national politics once again. While he has not formally announced any intention to challenge Keir Starmer, many within Westminster now view him as the most credible alternative should Labour seek a change in leadership.

Makerfield was always about more than a single constituency. The by-election quickly became a test of Burnham's national appeal and whether voters would support his return to frontline politics. A convincing victory has strengthened his position and ensured that discussion about Labour's future will continue in the weeks ahead.

Burnham has spent much of the past decade building a reputation as one of Britain's most influential regional politicians. During his time as Mayor of Greater Manchester, he became known for publicly challenging governments of all colours when he believed local interests were being overlooked. Supporters argue that this independence is one of the reasons he remains popular beyond Labour's traditional voter base.

The result is also likely to increase pressure on Keir Starmer. While Labour remains in government, questions over the party's direction, electoral performance and ability to respond to Reform UK's growing support have become increasingly common. Burnham's return to Parliament provides Labour MPs with an obvious alternative should dissatisfaction with the current leadership continue to grow.

For Reform UK, the result was a reminder that while the party continues to attract support across the country, turning that support into parliamentary victories remains a challenge. Despite a strong campaign, Reform was unable to prevent Burnham from securing a clear win in a constituency Labour was determined to hold.

Attention will now turn to Burnham's next move. Whether he chooses to remain a prominent voice on Labour's backbenches, seek a senior role within the party, or eventually mount a leadership challenge remains unclear. What is certain is that his return to Westminster has altered the political conversation.

Other By-Election Results

Makerfield was not the only constituency voting on the night.

In Aberdeen South, the Conservatives secured a significant victory over the SNP. The campaign was heavily influenced by the future of the North Sea energy industry, with the Conservatives arguing that continued oil and gas production remains essential for jobs, investment and energy security. The result will be viewed as evidence that natural resources and energy policy continue to be powerful electoral issues in parts of Scotland.

Meanwhile, the SNP successfully held Arbroath and Broughty Ferry. Party figures pointed to the result as evidence that support for Scottish independence remains resilient despite recent political difficulties. While the seat remained in SNP hands, the contest highlighted the continued importance of the constitutional debate ahead of future elections.

Taken together, the three by-elections offered a snapshot of Britain's changing political landscape. Labour retained a key seat but faces growing questions over leadership, the Conservatives found success in Scotland through a campaign focused on energy and natural resources, and the SNP held firm while continuing to make the case for independence.

For Andy Burnham, however, the night's most significant outcome was simple. He is back in Parliament, and the debate over Labour's future has become much harder to ignore.