How tightly the Plaid Cymru votes together

Computed from every recorded Commons division in the current Parliament. For each division we look at how the party’s MPs voted as a bloc and treat anyone on the opposite side from their party’s internal majority as a rebel on that division. Tells you how often the whip holds and which MPs break it.

Cohesion

99.4%

of votes on the party's winning side

Unanimous divisions

98.1%

363 of 370 divisions

Divisions participated in

370

this Parliament

Current MPs

4

in cohesion calc

Top rebels · MPs voting against the party whip most often

Calculation requires ≥ 20 recorded votes by the MP. Excludes tellers and unanimous divisions where the “rebellion” would be meaningless.

#	MP	Rebellions	Total votes	Rebel rate
1	Liz Saville Roberts	4	334	1.2%
2	Ann Davies	2	281	0.7%
3	Ben Lake	0	345	0.0%
4	Llinos Medi	0	288	0.0%

Source: mp_division_votes table built from parlparse + Commons Votes API. Calculation excludes tellers, abstentions, and votes where the MP’s vote_type was something other than aye/no. Cohesion = aligned votes / total votes across all participated divisions.