Democracy: A Commons vote of confidence following mid-term prime ministerial succession

Ministerial submission

To: The Leader of the House of Commons

Issue

1. The United Kingdom has no codified process by which the House of Commons formally tests or confirms its confidence in a new Prime Minister, whether appointed after a general election or, as has become increasingly frequent, mid-Parliament following the resignation of a predecessor. This submission concerns whether the House should adopt such a process for mid-term successions specifically, and if so, in what form.

Background

2. By constitutional convention, the Sovereign appoints as Prime Minister the person judged most likely to command the confidence of the House of Commons. Where a single party holds a Commons majority and that party’s leader changes between general elections, the judgement is, in practice, straightforward: the party’s own leadership process determines the successor, and the Sovereign’s appointment follows. This has happened repeatedly in recent decades — Douglas-Home in 1963, Callaghan in 1976, Major in 1990, Brown in 2007, May in 2016, Johnson in 2019, Truss and Sunak in 2022, and Burnham in 2026 are among the examples — and is, in itself, an established and unremarkable feature of the constitution.

3. The Commons is not, however, asked to vote on the appointment itself. The first occasion on which its confidence is formally tested is ordinarily the vote on the Loyal Address following the next King’s Speech, an occasion that already comes some weeks after a change of Prime Minister following a general election — the Constitution Unit has noted that David Cameron served for four weeks forming a coalition government in 2010 before his administration’s confidence was formally tested on 8 June that year — and that has no fixed date at all following a mid-term succession, since a new Parliamentary Session, and the King’s Speech that opens it, may not occur for many months, or over a year, after a new Prime Minister takes office outside that cycle.

4. Two of the United Kingdom’s own devolved legislatures already operate a different model. Under the Scotland Act 1998, the Scottish Parliament nominates its First Minister by vote — an overall majority in the first round, a simple majority in a second round if no candidate secures the first — with the Sovereign’s appointment following that nomination; the Senedd elects the First Minister of Wales by a comparable process under the Government of Wales Act 2006. Internationally, Germany’s Bundestag elects the Federal Chancellor under Article 63 of the Basic Law, and Spain’s Congress of Deputies holds an investiture vote requiring an absolute majority in the first round and a simple majority forty-eight hours later in the second; both systems make the parliamentary vote the constitutive act of appointment rather than a subsequent confirmation of it.

5. The statutory footing for confidence motions generally has, if anything, moved in the opposite direction in recent years. The Fixed-term Parliaments Act 2011 created a codified confidence-motion procedure with a statutory fourteen-day period in which an alternative government could be formed before an early general election was triggered; the Dissolution and Calling of Parliament Act 2022 repealed that Act and revived the pre-2011 prerogative, returning confidence-motion practice to unwritten convention with no codified procedure of any kind. The current position is, in that sense, less formalised than at any point since 2011.

6. You have not yet been asked to take a position on this question, but it has direct and immediate relevance to the Government’s own position. The Prime Minister has repeatedly framed his premiership around ending what he has described as a period of political instability reflected in seven changes of Prime Minister in a decade, and the Institute for Government has, in commentary specifically addressed to his own appointment, suggested that “MPs hold a confirmatory vote when a new PM is appointed, similar to the first minister votes in other UK nations” as a way of resolving disputed mandates without requiring the Sovereign to adjudicate them. Officials should be conscious that any reform considered here would, in its first live application, concern the sitting Prime Minister’s own position, and that this bears directly on how, not only whether, reform should be pursued.

The General Case

7. The case for introducing a formal Commons process rests on three grounds:

• (a) reliance on assessed confidence rather than a demonstrated vote has, on the Institute for Government’s own account, left the current Prime Minister’s mandate open to genuine and continuing public and political dispute; a defined mechanism would resolve that dispute one way or the other rather than leaving it unsettled indefinitely;
• (b) the gap between a mid-term appointment and the next available formal test of confidence has no fixed upper bound, and during it the country is governed by a Prime Minister whose Commons confidence, though assumed, has not been tested by any vote;
• (c) Scotland and Wales demonstrate that a parliamentary vote to confirm or nominate the head of government operates without practical difficulty within the United Kingdom’s own constitutional family, addressing the most obvious objection that such a mechanism would be foreign to British practice.

8. The case against rests on three grounds:

• (a) the flexibility of an unwritten convention has allowed the system to accommodate a wide range of succession circumstances, including sudden resignation and death in office, across eight decades without codified difficulty, and a fixed procedure risks introducing rigidity a future, genuinely urgent succession might not accommodate as well;
• (b) any reform agreed now would apply, in its first use, to the sitting Prime Minister’s own position; whichever option is pursued, and however it is pursued, there is an inescapable risk of the change being read as either shoring up or undermining his particular legitimacy, a perception problem that attaches to this subject more directly than to most constitutional or procedural reform;
• (c) a formal vote makes a loss of confidence sharper and more public than the present gradual process, in which pressure builds through party mechanisms before a resignation is tendered; this may be constitutionally healthier, but is also more likely to precipitate an immediate change of Government or general election than the present system, which affords more room for informal resolution.

Options

Option A: Retain the current convention-based approach

9. Under this option, no change is made. The Prime Minister continues to be appointed on the Sovereign’s judgement of who commands the confidence of the House, tested informally through party mechanisms and, in due course, through the next King’s Speech or any confidence motion the Opposition chooses to table.

10. For:

• (a) preserves eighty years of flexible practice that has accommodated a wide range of succession circumstances without codified difficulty;
• (b) avoids the perception risk at paragraph 8(b) entirely, since no new mechanism is introduced that could be read as designed around the current Prime Minister;
• (c) the Opposition already retains the power to table a motion of no confidence at any time under existing convention, providing a check that does not depend on a new Standing Order.

11. Against:

• (a) does nothing to resolve the mandate ambiguity identified at paragraph 7(a), which the Institute for Government has identified as a live and recurring problem rather than a one-off;
• (b) leaves in place the extended and variable gap identified at paragraph 3 before any formal test of confidence occurs, with no fixed upper bound following a mid-term succession;
• (c) the recurrence of contested mandates across seven Prime Ministers in a decade suggests that reliance on the Opposition’s discretion to table a confidence motion, rather than an automatic mechanism, has not in practice resolved the ambiguity promptly in every case.

Option B: A Standing Order requiring a reifying confidence vote following mid-term succession

12. Under this option, the House of Commons would, by Standing Order, be required to hold a dedicated vote of confidence in any Prime Minister who takes office without an intervening general election, within a fixed period — for example, the first fourteen sitting days — of their appointment. The vote would not itself appoint the Prime Minister, who would continue to take office on the Sovereign’s judgement as at present; it would instead formally test and record whether the House considers that judgement to have been correctly made. A defeat would carry no statutory consequence of its own, but would engage the same convention that currently applies to any confidence defeat: an expectation that the Prime Minister resign or seek dissolution.

13. For:

• (a) directly addresses the mandate ambiguity identified at paragraph 7(a), giving a clear, prompt, public answer to the question the Institute for Government and others have raised about the current Prime Minister’s mandate, and any future mid-term successor’s;
• (b) requires no change to the Sovereign’s role or the prerogative of appointment, since the vote confirms rather than constitutes the appointment, minimising constitutional disruption relative to Option D;
• (c) a fixed short window closes the extended and unpredictable gap identified at paragraph 3, without waiting for a King’s Speech that, for a mid-term succession, may be a long way off.

14. Against:

• (a) a vote that confirms an appointment already made is, in political if not procedural terms, difficult to distinguish from ordinary Government business; a governing party’s whipped majority would be expected to carry it in almost all circumstances, and a mechanism that in practice always succeeds may resolve the mandate question less fully than its proponents intend;
• (b) defining “a fixed period” requires care: too short risks a rushed vote before a new Prime Minister has had the opportunity to set out their programme, as the King’s Speech process currently allows; too long recreates the delay the option is designed to remove;
• (c) as identified at paragraph 8(b), the first Prime Minister to face a vote under a newly introduced Standing Order would be the sitting Prime Minister, and the timing and design of the vote would attract scrutiny as shaped around that specific case rather than as a matter of general principle.

Option C: Deem the next Loyal Address a formal confidence matter

15. Under this option, the House would declare in advance, by Standing Order, that the first vote on the Loyal Address following any mid-term prime ministerial succession is a formal matter of confidence in the Prime Minister personally, and not only in the Government’s legislative programme, removing ambiguity about the vote’s constitutional significance without creating a new, separate procedural event.

16. For:

• (a) requires no new item of Commons business, using an occasion that already occurs, at lower procedural cost than Option B;
• (b) removes the specific ambiguity illustrated at paragraph 3 by stating clearly in advance what the vote means, rather than leaving its significance to be inferred after the fact;
• (c) is less exposed than Option B to the “always succeeds” critique at paragraph 14(a), since a Loyal Address vote already carries some risk of amendment or defeat on its own merits, distinct from a vote whose sole purpose is confirmation.

17. Against:

• (a) does not close the timing gap at paragraph 3: a mid-term succession is not guaranteed a King’s Speech within any fixed period, so the vote could still be many months away;
• (b) conflates confidence in the Prime Minister personally with confidence in the legislative programme they propose, two analytically distinct questions that a dedicated vote under Option B would keep separate;
• (c) provides a weaker answer to the mandate question than Option B or D, since a Loyal Address defeated on the detail of the programme, rather than on confidence in the Prime Minister as such, would leave the underlying question of personal mandate unresolved even after the vote.

Option D: A parliamentary nomination vote following the Scotland and Wales model

18. Under this option, following a mid-term vacancy in the office of Prime Minister, the House of Commons would nominate a Prime Minister by vote — an overall majority in the first round, a simple majority in a second round if no candidate secures the first — before the Sovereign formally appoints the nominee, adapting the mechanism already used to elect the First Ministers of Scotland and Wales. Unlike Option B, the vote would constitute rather than confirm the appointment.

19. For:

• (a) provides the clearest and most direct answer to the mandate question, since the Prime Minister’s authority would rest on an actual Commons vote rather than an inference from party mechanisms and Crown judgement;
• (b) adapts a mechanism already proven to work within the United Kingdom’s own constitutional family for two of its devolved administrations, meeting the objection at paragraph 7(c) more fully than Option B;
• (c) where a first-round candidate fails to secure a majority, the process itself provides a structured means of testing alternative candidates, which the current system, reliant on internal party processes followed by a single Crown judgement, does not offer.

20. Against:

• (a) touches the Sovereign’s role most directly of the four options: the Crown’s appointment would follow, rather than independently judge, the outcome of a Commons vote, a more significant change to the prerogative of appointment than Option B’s confirmatory model, even if in most cases the practical exercise of the prerogative would already track the vote;
• (b) confined to mid-term successions specifically, as proposed, the mechanism would sit alongside a different, unreformed process for choosing a Prime Minister following a general election, creating two distinct routes to the office rather than one consistent procedure;
• (c) the most significant departure from current practice of the four options, and correspondingly the most likely to require sustained cross-party negotiation before it could be agreed, a particular difficulty given the perception risk identified at paragraph 8(b).

Resource and Cost Implications

21. None of the options carries material direct financial cost; the resource implications are principally of Parliamentary time and procedural drafting. Option A requires none beyond the status quo. Option C requires the least additional drafting, amending only the Standing Order governing the Loyal Address debate. Option B requires a new, free-standing Standing Order and associated procedural guidance for the Table Office. Option D requires the most extensive procedural development, likely including provision for multiple rounds of voting, modelled on but not identical to the Scottish Parliament’s Standing Orders governing the nomination of the First Minister.

Legal and Constitutional Considerations

22. As with Standing Order reform generally, none of these options can be introduced unilaterally by the Government: Standing Orders are a matter for the House of Commons to determine by resolution. The sensitivity identified at paragraph 8(b) makes cross-party agreement through the Usual Channels particularly important here, more so than for the procedural reforms considered in the companion submission on Hybrid Bill procedure, given that the immediate subject of any reform is the legitimacy of the sitting Prime Minister’s own position.

23. Options B and C operate entirely on the Commons side of the process and do not alter the prerogative of appointment; a Standing Order is sufficient, in principle, to introduce either. Option D is different in kind: a Standing Order could establish the Commons’ nomination procedure, but could not of itself legally bind the Sovereign’s prerogative of appointment. In Scotland and Wales, the First Minister’s appointment on the Parliament’s or Senedd’s nomination is a legal requirement under the Scotland Act 1998 and the Government of Wales Act 2006 respectively; an equivalent legal requirement at Westminster would need primary legislation, engaging the established process for seeking the Sovereign’s consent to measures affecting the Crown’s prerogatives. Absent such legislation, the Sovereign’s appointment following a Commons nomination vote under Option D would rest on convention rather than law, in much the same manner as the confirmation under Option B.

24. This submission illustrates a recurring pattern set out in the structural-problems digest under the convention-versus-codification problem: options here divide between those that formalise the House’s own practice, which the House may fix by Standing Order alone, and Option D, which would touch a prerogative the House cannot bind by resolution and which would, if given legal rather than conventional force, require primary legislation.

Requested direction

25. Ministers are invited to indicate whether the current convention-based approach should continue unchanged (Option A); whether the House should be invited to adopt a Standing Order requiring a dedicated confidence vote within a fixed period of any mid-term prime ministerial succession (Option B); whether a more limited clarification, deeming the next Loyal Address following such a succession to be a formal matter of confidence, should be pursued instead (Option C); or whether a fuller nomination-vote model adapted from the Scottish and Welsh precedent should be developed for further consideration, recognising the more extensive engagement with the Palace that would require (Option D); and, given the direct bearing of this question on the sitting Prime Minister’s own position, how the preferred option should be tested with the Official Opposition’s business managers before any motion is brought forward.