United Kingdom

House of Commons

Party discipline — House of Commons

Which parties hold together, and which vote together — over the last 50 genuine roll-call votes. Cohesion is the Rice index (how unanimous a party is); agreement is how often two parties' majorities matched.

Party cohesion

How unanimously each party votes (1 = everyone together).

Democratic Unionist Party100%45 v

Green Party100%44 v

Reform UK100%42 v

Ulster Unionist Party100%30 v

Traditional Unionist Voice100%25 v

Scottish National Party100%17 v

Social Democratic & Labour Party100%14 v

Restore Britain100%12 v

Alliance100%5 v

Conservative98%46 v

Plaid Cymru97%37 v

Labour (Co-op)96%48 v

Liberal Democrat96%41 v

Labour96%49 v

Your Party95%44 v

Independent59%49 v

Party agreement

How often two parties' for/against majorities matched. Darker = more aligned.

	Democratic Unionist Party	Green Party	Reform UK	Ulster Unionist Party	Traditional Unionist Voice	Scottish National Party	Social Democratic & Labour Party	Restore Britain	Alliance	Conservative	Plaid Cymru	Labour (Co-op)	Liberal Democrat	Labour	Your Party	Independent
Democratic Unionist Party	100	33	100	86	100	29	7	92	60	98	30	5	50	7	36	44
Green Party	33	100	32	37	35	94	92	0	40	27	97	67	92	68	92	79
Reform UK	100	32	100	85	100	31	7	100	60	100	31	2	50	2	33	36
Ulster Unionist Party	86	37	85	100	94	50	20	82	100	89	41	13	54	13	48	54
Traditional Unionist Voice	100	35	100	94	100	33	0	100	60	100	35	8	53	12	35	57
Scottish National Party	29	94	31	50	33	100	100	33	67	25	100	65	94	65	100	100
Social Democratic & Labour Party	7	92	7	20	0	100	100	0	100	0	100	86	83	86	100	100
Restore Britain	92	0	100	82	100	33	0	100	100	100	20	0	20	0	30	45
Alliance	60	40	60	100	60	67	100	100	100	60	40	20	60	20	80	100
Conservative	98	27	100	89	100	25	0	100	60	100	31	4	43	7	26	37
Plaid Cymru	30	97	31	41	35	100	100	20	40	31	100	67	91	68	94	85
Labour (Co-op)	5	67	2	13	8	65	86	0	20	4	67	100	53	100	66	60
Liberal Democrat	50	92	50	54	53	94	83	20	60	43	91	53	100	53	83	77
Labour	7	68	2	13	12	65	86	0	20	7	68	100	53	100	66	61
Your Party	36	92	33	48	35	100	100	30	80	26	94	66	83	66	100	86
Independent	44	79	36	54	57	100	100	45	100	37	85	60	77	61	86	100

Cohesion uses the Rice index |for − against| / (for + against), averaged over votes where the party cast for/against ballots. Agreement counts only votes where both parties had a clear majority. Independents (no party) and votes recorded only at party level are excluded. Source: developer.parliament.uk (Open Government Licence v3).