Analysis

Cohesion

Final votes · 1 Jan 2025 – 31 Dec 2025 · 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 votes293 All roll calls2 891

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 2025 – 23 Jan 2025 to 15 Dec 2025 – 18 Dec 2025: Agreement Index from 0 (evenly split) to 1 (all voted the same).

20 Jan 2025 – 23 Jan 2025 → 15 Dec 2025 – 18 Dec 2025; 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 2025 – 23 Jan 2025	—6 votes	—6 votes	—6 votes	—6 votes	—6 votes	—6 votes	—6 votes	—6 votes
10 Feb 2025 – 13 Feb 2025	—10 votes	—10 votes	—10 votes	—10 votes	—10 votes	—10 votes	—10 votes	—10 votes
10 Mar 2025 – 13 Mar 2025	—14 votes	—14 votes	—14 votes	—14 votes	—14 votes	—14 votes	—14 votes	—14 votes
31 Mar 2025 – 3 Apr 2025	0.7821 votes	0.8521 votes	0.9221 votes	0.9921 votes	0.9321 votes	0.7721 votes	0.7921 votes	0.8921 votes
5 May 2025 – 8 May 2025	0.8036 votes	0.9536 votes	0.9436 votes	0.9336 votes	0.9136 votes	0.6936 votes	0.6936 votes	0.9036 votes
21 May 2025 – 22 May 2025	—6 votes	—6 votes	—6 votes	—6 votes	—6 votes	—6 votes	—6 votes	—6 votes
16 Jun 2025 – 19 Jun 2025	0.7821 votes	0.9821 votes	0.9621 votes	0.9521 votes	0.9521 votes	0.7021 votes	0.6721 votes	0.8221 votes
7 Jul 2025 – 10 Jul 2025	0.7929 votes	0.9629 votes	0.9529 votes	0.9429 votes	0.9429 votes	0.8129 votes	0.7129 votes	0.8429 votes
8 Sept 2025 – 11 Sept 2025	0.7329 votes	0.9329 votes	0.9329 votes	0.9229 votes	0.9429 votes	0.8429 votes	0.7329 votes	0.8529 votes
6 Oct 2025 – 9 Oct 2025	0.8324 votes	0.9324 votes	0.9524 votes	0.8724 votes	0.9024 votes	0.7324 votes	0.7424 votes	0.8824 votes
20 Oct 2025 – 23 Oct 2025	—19 votes	—19 votes	—19 votes	—19 votes	—19 votes	—19 votes	—19 votes	—19 votes
13 Nov 2025	—16 votes	—16 votes	—16 votes	—16 votes	—16 votes	—16 votes	—16 votes	—16 votes
24 Nov 2025 – 27 Nov 2025	0.8034 votes	0.9734 votes	0.9634 votes	0.7934 votes	0.8434 votes	0.7834 votes	0.7034 votes	0.8434 votes
15 Dec 2025 – 18 Dec 2025	0.8328 votes	0.9328 votes	0.9228 votes	0.8228 votes	0.9128 votes	0.8228 votes	0.7428 votes	0.8428 votes
Whole period	0.79	0.94	0.94	0.90	0.91	0.76	0.73	0.86
Votes considered	293	293	293	293	293	293	293	293

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	0.79	293	44
Greens	0.94	293	53
S&D	0.94	293	135
Renew	0.90	293	78
EPP	0.91	293	184
ECR	0.76	293	84
Patriots	0.73	293	85
ESN	0.86	293	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.

293 votes considered (final votes matching the filters; scope).
78 of 371 decisions in the period had no final vote recorded by name (a show of hands or a count without names) and cannot be measured.
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 28 Sept 2026, 03:25 UTC (data stamp 5a7357168c2a, 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=2025-01-01&to=2025-12-31
Data source: European Parliament Open Data
Licensed CC BY 4.0.
Data version: data version 5a7357168c2a (28 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: 28 September 2026

Cite as

EU Parl Watch Research (2026). “Cohesion — Final votes · 1 Jan 2025 – 31 Dec 2025 · political groups · per part-session · abstentions counted”. Analysis. EU Parl Watch Research. https://news.eu-parl.st-solutions.dev/analysis/cohesion?bucket=session&from=2025-01-01&to=2025-12-31 (retrieved 28 September 2026). Data: European Parliament Open Data, https://data.europarl.europa.eu/ (CC BY 4.0); data version 5a7357168c2a (28 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-2026-09-28,
  author = {{EU Parl Watch Research}},
  title = {{Cohesion — Final votes · 1 Jan 2025 – 31 Dec 2025 · political groups · per part-session · abstentions counted}},
  year = {2026},
  howpublished = {\url{https://news.eu-parl.st-solutions.dev/analysis/cohesion?bucket=session&from=2025-01-01&to=2025-12-31}},
  url = {https://news.eu-parl.st-solutions.dev/analysis/cohesion?bucket=session&from=2025-01-01&to=2025-12-31},
  urldate = {2026-09-28},
  publisher = {EU Parl Watch Research},
  note = {Analysis. Data: European Parliament Open Data (CC BY 4.0); data version 5a7357168c2a (28 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}
}