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The Trouble with Winning Big: Labour’s Huge Majority is Reshaping Where Power Lives

26/06/2025

In Labour, Politics, Public Affairs, Strategy

By Jonathan Connolly

The Trouble with Winning Big: Labour’s Huge Majority is Reshaping Where Power Lives

Just a year ago, a 174-seat majority was a source of strength for the new Labour Government, and a reason for optimism among those seeking to engage with it. A large majority often brings greater stability, clearer policy direction, and a deep bench of ministers and aligned MPs for campaigners and businesses to connect with.

But size can also bring complexity. With more MPs comes more competing pressures, and, increasingly, signs that those inside the Government tent may not always stay there. 

The current revolt over reforms to Personal Independence Payments (PIP), with over 120 Labour MPs backing an amendment to shelve the proposals, is the most visible example so far. But it may also be a sign of deeper issues with how discipline and alignment are being managed inside Starmer’s Government.

More MPs, More Problems

Labour is not the first administration to find that a large majority can create as many headaches as it solves. Johnson and Sunak both faced internal opposition over key legislation, despite their commanding numbers. Blair, even at the height of his authority, was repeatedly challenged from within his own party.

Governments have typically managed these pressures in three main ways:

  • Incentivising loyalty through rapid promotion and access to ministerial office.
  • Avoiding confrontation by controlling the parliamentary timetable and bundling controversial measures with less divisive ones.
  • Imposing discipline, sometimes through the pre-emptive removal of the whip, as Boris Johnson did in 2019.

Each tactic has its place, but each also has its limits.

Starmer’s Big Tent

Since entering office, Keir Starmer has opted to build a broad and structured network of alignment around his Government.

The current formal Government comprises 119 ministers, a slightly leaner operation than Sunak’s 125. Alongside them are 43 Parliamentary Private Secretaries (PPSs), consistent with recent administrations.

But this only tells part of the story.

Soon after the election, the Government appointed 27 ‘mission champions’, MPs tasked with supporting the delivery of its five flagship missions across the UK. This was followed by the creation of 32 ‘business champions’, who represent specific sectors within each region or nation. Add to that 20 MPs serving as the Prime Minister’s Trade Envoys, and the network of ‘aligned’ MPs quickly grows.

Taken together, these appointments bring the informal ‘payroll vote’ to around 240 Labour MPs. That’s sixty per cent of the Parliamentary Labour Party who are aligned with the government and on whom the PM should reasonably expect their vote. As a cohort of its own, if it were split from the rest of the Labour MPs, it would be the largest party in the Commons.

Walking through parliament, you’re more likely to bump into a Labour MP with a ‘job’ than without, and while cynics may question the utility of these roles, they do bring visibility, a closer relationship with ministers, and in many cases, an active voice in shaping policy implementation. They remain a vital part of how the Government communicates and delivers its agenda, and for those seeking to influence policy, they remain key routes into Government thinking.

Rebellion from Inside the Tent

Despite the scale of this network, it hasn’t contained all dissent. Of the 127 Labour MPs who have signed an amendment opposing the Government’s welfare reforms, almost 20 per cent hold one of these roles:

  • 1 mission champion
  • 8 business champions
  • 13 trade envoys

This suggests that alignment with the Government doesn’t guarantee obedience.

The rebellion is not just a policy dispute; it is a direct consequence of the Government’s failure to anticipate internal resistance and manage it effectively. These are not MPs breaking ranks over minor issues, they are government-aligned figures rejecting a flagship policy. That speaks to a breakdown in internal communications, policy consultation, and political management.

Starmer’s administration, despite the size of its majority and the breadth of its payroll vote, has not managed to avoid legislative fragility. A machine designed for loyalty has faltered at the first real test.

The Growing Pull of Place

Many of those new Labour MPs aren’t just new to Parliament, they’re new to the political map. The last election returned a historic number of Labour MPs in southern constituencies, often on razor-thin majorities. Over 100 were elected with less than five percent of the vote. For them, loyalty to the party must be balanced with visible delivery for their communities, and the pressure to be more than a one-term wonder is real.

That’s why local identity, regional priorities, and constituency sentiment are playing a bigger role in shaping behaviour on the Labour benches, even among those aligned with the Government. It’s not that politics has given way to place, but that place is asserting itself within politics in ways that are increasingly hard to ignore.

What the Rebellion Really Reveals

This rebellion, then, is a reminder that MPs still matter. 

Even in an era of professionalised politics, iron discipline, and supersized majorities, individual parliamentarians retain the power to disrupt, dissent, and ultimately decide. That 18 members of Starmer’s own informal payroll vote are willing to publicly reject a flagship welfare bill is not just a political embarrassment, it’s a failure of internal comms and party organisation. These MPs are not just voting; they’re making a point about the boundaries of their loyalty.

For those seeking to influence policy, it’s a clear signal. Political strategy can’t just be about top-down engagement or assuming government control will always hold. Influence increasingly depends on understanding where those internal pressure points are, and how to work with the people who are still willing to use them. 

Westminster remains unpredictable because politics, thankfully, remains personal.

From a public affairs perspective, it is clear that the central control is not as complete as it seems, and understanding MPs as people – not just posts – is now critical.Find out more about our public affairs services

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