Analysis

Cohesion

Final votes · 1 Jan 2026 – 27 Sept 2026 · political groups · per part-session · abstentions counted

How united do the groups vote — over time, and on the votes of each committee or topic?

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Period Term 2024 2025 2026 Last 6 months

Custom dates

Votes Final votes261 All roll calls2 521

Blocs Groups Delegations

Periods Part-sessions Quarters Months Whole period

Positions For, against, abstained For and against only ⓘ

Lead committee Topic (model-assigned) Kind of decision Contested votes only (largest side under 80 %)

Cohesion over time

Agreement Index per part-session, from 0 (evenly split) to 1 (all voted the same). A vote counts for a bloc when at least 10 of its members and a third of its seats voted; a gap is a period with fewer than 20 votes counted.

Cohesion of the groups per part-session, 20 Jan 2026 – 22 Jan 2026 to 14 Sept 2026 – 17 Sept 2026: Agreement Index from 0 (evenly split) to 1 (all voted the same).

20 Jan 2026 – 22 Jan 2026 → 14 Sept 2026 – 17 Sept 2026; each panel highlights one series, the others faint behind it.

Dashed: a period with fewer than 20 votes counted (no value) between two that have one.

Data as a table

Agreement Index per period (0 = evenly split, 1 = all voted the same), with the votes counted in it. — : fewer than 20 votes counted in the period (a vote counts for a bloc when at least 10 of its members and a third of its seats voted).
Period	The Left	Greens	S&D	Renew	EPP	ECR	Patriots	ESN
20 Jan 2026 – 22 Jan 2026	0.7421 votes	0.9022 votes	0.9322 votes	0.9422 votes	0.9422 votes	0.7522 votes	0.7222 votes	0.8822 votes
9 Feb 2026 – 12 Feb 2026	0.7926 votes	0.8726 votes	0.9426 votes	0.7726 votes	0.8226 votes	0.8126 votes	0.7226 votes	0.8826 votes
24 Feb 2026	—1 vote	—1 vote	—1 vote	—1 vote	—1 vote	—1 vote	—1 vote	—1 vote
9 Mar 2026 – 12 Mar 2026	0.6827 votes	0.9527 votes	0.9627 votes	0.9227 votes	0.9627 votes	0.6627 votes	0.6727 votes	0.8327 votes
25 Mar 2026 – 26 Mar 2026	—13 votes	—13 votes	—13 votes	—13 votes	—13 votes	—13 votes	—13 votes	—13 votes
27 Apr 2026 – 30 Apr 2026	0.7842 votes	0.9342 votes	0.9742 votes	0.9242 votes	0.9242 votes	0.7542 votes	0.7442 votes	0.8142 votes
18 May 2026 – 21 May 2026	0.7325 votes	0.9225 votes	0.9625 votes	0.9625 votes	0.9625 votes	0.8125 votes	0.6825 votes	0.8025 votes
15 Jun 2026 – 18 Jun 2026	0.7432 votes	0.9232 votes	0.9432 votes	0.8833 votes	0.9333 votes	0.7633 votes	0.7332 votes	0.8532 votes
6 Jul 2026 – 9 Jul 2026	0.7334 votes	0.9334 votes	0.9134 votes	0.8734 votes	0.8934 votes	0.6834 votes	0.6834 votes	0.8934 votes
14 Sept 2026 – 17 Sept 2026	0.7638 votes	0.8938 votes	0.9538 votes	0.8638 votes	0.9038 votes	0.8138 votes	0.6638 votes	0.8538 votes
Whole period	0.75	0.91	0.94	0.88	0.92	0.76	0.70	0.85
Votes considered	259	260	260	261	261	261	260	260

Over the whole selection

Each group’s Agreement Index over every vote in the selection where enough of its members voted.

Cohesion: the Agreement Index (0–1) over the votes counted — votes where at least 10 members and a third of the seats voted; — : fewer than 20 such votes. Seats: members now. Order as the backend lists the blocs, not a ranking.
Group	Cohesion	Votes counted	Seats
The Left	0.75	259	44
Greens	0.91	260	53
S&D	0.94	260	135
Renew	0.88	261	78
EPP	0.92	261	184
ECR	0.76	261	84
Patriots	0.70	260	85
ESN	0.85	260	27

The tables by committee and by topic are computed over a whole period: choose Whole period.

About these figures

What was counted, what was left out, and how.

261 votes considered (final votes matching the filters; scope).
81 of 342 decisions in the period had no final vote recorded by name (a show of hands or a count without names) and cannot be measured.
6 times a bloc had too few members voting on a vote (fewer than 10, or under a third of its seats) and was left out of that vote (turnout rule).
Cohesion is the Agreement Index: 1 when every voting member took the same position, 0 when the bloc split evenly three ways (method). A bloc counts on a vote only when at least 10 of its members and a third of its seats voted; the non-attached have no group cohesion.
Months are offered for all roll calls only, and a month needs at least 20 votes.
Each member is counted in the group they belonged to on the day of the vote (group at the date).
Roll calls are not a random sample: final votes on laws are recorded by name, most other roll calls because a group asked for it. A group’s line is inferred from its members’ votes; the Parliament publishes no whip.
Methods: Cohesion (Agreement Index) v1, Final votes and all roll calls v1, Group at the date of the vote v1.
Data as of 27 Sept 2026, 03:25 UTC (data stamp e994c83b5003, code 6d4005c55bde; what the stamp is).

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Sources & citation

Where the facts on this page come from, and how to cite it.

Permalink: https://news.eu-parl.st-solutions.dev/analysis/cohesion?bucket=session&from=2026-01-01&to=2026-12-31
Data source: European Parliament Open Data
Licensed CC BY 4.0.
Data version: data version e994c83b5003 (27 Sept 2026) · methods: group-at-date v1, participation v1, abstention v1, loyalty v1, against-clear v1, cohesion v1, agreement v1, group-agreement v1, winning-side v1, similar-votes v1, scope v1, data-version v1 · methods
Retrieved: 27 September 2026

Cite as

EU Parl Watch Research (2026). “Cohesion — Final votes · 1 Jan 2026 – 27 Sept 2026 · political groups · per part-session · abstentions counted”. Analysis. EU Parl Watch Research. https://news.eu-parl.st-solutions.dev/analysis/cohesion?bucket=session&from=2026-01-01&to=2026-12-31 (retrieved 27 September 2026). Data: European Parliament Open Data, https://data.europarl.europa.eu/ (CC BY 4.0); data version e994c83b5003 (27 Sept 2026) · methods: group-at-date v1, participation v1, abstention v1, loyalty v1, against-clear v1, cohesion v1, agreement v1, group-agreement v1, winning-side v1, similar-votes v1, scope v1, data-version v1.

BibTeX

@misc{epw-analysis-2026-09-27,
  author = {{EU Parl Watch Research}},
  title = {{Cohesion — Final votes · 1 Jan 2026 – 27 Sept 2026 · political groups · per part-session · abstentions counted}},
  year = {2026},
  howpublished = {\url{https://news.eu-parl.st-solutions.dev/analysis/cohesion?bucket=session&from=2026-01-01&to=2026-12-31}},
  url = {https://news.eu-parl.st-solutions.dev/analysis/cohesion?bucket=session&from=2026-01-01&to=2026-12-31},
  urldate = {2026-09-27},
  publisher = {EU Parl Watch Research},
  note = {Analysis. Data: European Parliament Open Data (CC BY 4.0); data version e994c83b5003 (27 Sept 2026) · methods: group-at-date v1, participation v1, abstention v1, loyalty v1, against-clear v1, cohesion v1, agreement v1, group-agreement v1, winning-side v1, similar-votes v1, scope v1, data-version v1}
}