Manchester Mayoral Election: A Turning Point for Progressive Politics

The streets of Manchester told a familiar story this past week, but the numbers revealed a new chapter. Andy Burnham’s successor, Bev Craig, now holds the mayoralty, yet her path to victory underscores a fragile truth for Britain’s left. The progressive bloc is potent, but its cohesion is a choice, not a guarantee.

Craig won under the supplementary vote system. In the first round, Labour secured just 47% of the vote – a stark drop from Burnham’s consistent 60-plus percent performances. The victory was delivered by second preferences. Estimates suggest around seven in ten progressive voters who initially backed the Greens or the Liberal Democrats ultimately rallied behind Craig to lock out the Conservative candidate.

This is the age of bloc politics. Few voters switch from left to right, but many now shop around within their own camp. Look at the evidence: these same Greater Manchester voters consolidated behind Labour for mayor. Yet in the Gorton and Denton parliamentary by-elections earlier this year, they backed the Greens. In a Senedd contest last year, they chose Plaid Cymru.

A dual dynamic is at work. Voters are becoming more promiscuous in their loyalties, yet fiercely disciplined in their final voting act. They appear ready to flock to the progressive candidate best placed to defeat the right, but only if that candidate passes a threshold of credible commitment. As Professor Jane Green of the University of Manchester notes, “We see a pragmatic radicalism – a desire for change tempered by a ruthless electoral calculus.”

This fluidity presents two challenges: winning and governing. The specter of the “progressive tragedy” looms, where a split vote allows a united right to seize victory. The 2024 general election showed that majorities can be built on a minority of the popular vote, but such governments are weak. As pollster John Curtice has warned, “A mandate built on being the ‘least bad option’ evaporates at the first sign of trouble.” For stability, a governing party needs a deeper well of support, closer to 40% – a target Labour has not hit in a national election since 2005.

Labour’s historical refusal to collaborate structurally with other progressive forces traps it in a doom loop. To win under First Past the Post, it feels compelled to chase centrist and centre-right voters, diluting its platform. This creates a paradox: it wins power but lacks a mandate for the change needed to solve the crises it inherits. The consequence is a brittle coalition that fractures, as seen in the loss of the Red Wall, Scotland, and inner-city seats.

The solution lies in mobilising the full progressive majority around a transformative agenda. There are blueprints. Burnham’s own tenure in Manchester demonstrated the power of cross-party consensus. He built a durable coalition that secured sustained investment, fostering the fastest-growing economy in England. His experience with the supplementary vote system, where reaching out for second preferences was essential, led him to a powerful conclusion. “It made me a convert to proportional representation,” Burnham stated in a recent interview. “It forces a politics of listening.”

True mobilisation requires more than transactional electioneering. It needs building lasting alliances on shared challenges. Burnham’s cross-party initiative on social care, though imperfect for excluding the Greens, points the way. Such processes forge trust and reveal common ground, whether on public services or building a low-carbon economy.

The immediate test is electoral coordination. In by-elections, concentrated media attention can signal to voters which progressive candidate is best placed to win. A general election, with hundreds of contests happening at once, is a different beast. Without a formalised strategy for cooperation, chaos and “progressive tragedies” are inevitable.

The situation in Clacton is instructive, and woeful. The decision by Labour, the Liberal Democrats, and the Greens to all stand down, leaving voters with no serious challenger to Reform UK, is a failure of collective imagination. It echoes, yet squanders, the precedent of Tatton in 1997, where major parties stood aside for an independent anti-corruption candidate who won. A credible centre-right independent could have been rallied to challenge Reform, splitting the right-wing vote. This retreat establishes a dangerous norm that “national” parties can simply vacate the field.

Empowering local parties to make tactical decisions about whether to stand is a necessary step. But the fundamental unlock is proportional representation (PR). Its promise alone could galvanise and consolidate the progressive vote. Burnham backs it. The Liberal Democrat and Green manifestos pledge it. An upcoming Commons vote on a bill amendment to establish a commission on electoral reform, set for 2 September, is a critical litmus test. It will reveal whether the rhetorical commitment to a new politics is genuine.

The British right is resourceful and ruthless. It will not passively watch this progressive consolidation; it will seek to unite its own factions. The volatility of our politics is here to stay. The Manchester result is welcome, but ephemeral. The people, as ever, are ahead of the politicians. Their willingness to vote tactically within a progressive bloc shows a mature understanding of the stakes. If the parties can shed their self-defeating tribalism and catch up, then progressives won’t just beat Reform – they will beat the causes of Reform. The future hinges not on a single mayor’s victory, but on the alliances forged in its wake.

• The progressive bloc is powerful but needs cohesion.
• Winners must appeal to second preferences for success.
• Voter loyalty is shifting but remains within the left.
• Electoral challenges arise from potential split votes.
• Proportional representation could enhance unity.
• Lasting alliances are essential for transformative agendas.