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Analysis

Cohesion

All roll calls · whole term, 16 Jul 2024 – 26 Sept 2026 · topic Climate & environment (model-assigned) · 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 Term202420252026Last 6 months
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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, 16 Sept 2024 – 19 Sept 2024 to 14 Sept 2026 – 17 Sept 2026: Agreement Index from 0 (evenly split) to 1 (all voted the same).

16 Sept 2024 – 19 Sept 2024 → 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).
PeriodThe LeftGreensS&DRenewEPPECRPatriotsESN
16 Sept 2024 – 19 Sept 20240.8822 votes0.9822 votes0.9522 votes0.9322 votes0.8922 votes0.8322 votes0.7722 votes0.7822 votes
13 Nov 2024 – 14 Nov 20240.9925 votes0.9925 votes0.9825 votes0.8525 votes0.8125 votes0.8525 votes0.8525 votes0.9625 votes
25 Nov 2024 – 28 Nov 2024—1 vote—1 vote—1 vote—1 vote—1 vote—1 vote—1 vote—1 vote
17 Dec 2024 – 19 Dec 2024—2 votes—2 votes—2 votes—2 votes—2 votes—2 votes—2 votes—2 votes
31 Mar 2025 – 3 Apr 20250.9331 votes0.9331 votes0.9231 votes0.9031 votes0.9131 votes0.9631 votes0.8031 votes0.9231 votes
5 May 2025 – 8 May 20250.9342 votes0.9842 votes0.9042 votes0.9442 votes0.7242 votes0.8942 votes0.8542 votes0.9542 votes
21 May 2025 – 22 May 2025—18 votes—18 votes—18 votes—18 votes—18 votes—18 votes—18 votes—18 votes
16 Jun 2025 – 19 Jun 20250.8934 votes0.8834 votes0.9234 votes0.9634 votes0.9234 votes0.9234 votes0.7434 votes0.9134 votes
7 Jul 2025 – 10 Jul 20251.0037 votes1.0037 votes0.9937 votes0.9537 votes0.7237 votes0.8137 votes0.6237 votes0.8837 votes
8 Sept 2025 – 11 Sept 20250.9533 votes0.9933 votes0.9633 votes0.9833 votes0.9333 votes0.8333 votes0.9433 votes0.9033 votes
6 Oct 2025 – 9 Oct 2025—2 votes—2 votes—2 votes—2 votes—2 votes—2 votes—2 votes—2 votes
20 Oct 2025 – 23 Oct 20250.9743 votes0.9943 votes0.9743 votes0.9143 votes0.7943 votes0.8543 votes0.8043 votes0.9143 votes
13 Nov 20250.9541 votes0.9641 votes0.9841 votes0.9741 votes0.6541 votes0.9741 votes0.8941 votes0.8741 votes
24 Nov 2025 – 27 Nov 20251.0036 votes0.9636 votes0.9536 votes0.8036 votes0.9436 votes0.9836 votes0.9436 votes0.9636 votes
15 Dec 2025 – 18 Dec 2025—10 votes—10 votes—10 votes—10 votes—10 votes—10 votes—10 votes—10 votes
9 Feb 2026 – 12 Feb 2026—2 votes—2 votes—2 votes—2 votes—2 votes—2 votes—2 votes—2 votes
9 Mar 2026 – 12 Mar 2026—11 votes—11 votes—11 votes—11 votes—11 votes—11 votes—11 votes—11 votes
25 Mar 2026 – 26 Mar 2026—1 vote—1 vote—1 vote—1 vote—1 vote—1 vote—1 vote—1 vote
27 Apr 2026 – 30 Apr 20260.8728 votes0.9828 votes0.7628 votes0.7328 votes0.8428 votes0.9128 votes0.7828 votes0.8628 votes
18 May 2026 – 21 May 20260.9535 votes0.9935 votes0.9735 votes0.9335 votes0.7935 votes0.8635 votes0.8435 votes0.8735 votes
15 Jun 2026 – 18 Jun 20260.9321 votes0.9621 votes0.9421 votes0.8821 votes0.9221 votes0.8021 votes0.8421 votes0.8121 votes
6 Jul 2026 – 9 Jul 2026—11 votes—11 votes—11 votes—11 votes—11 votes—11 votes—11 votes—11 votes
14 Sept 2026 – 17 Sept 20260.9133 votes0.9733 votes0.9733 votes0.9333 votes0.8533 votes0.8733 votes0.8933 votes0.9533 votes
Whole period0.940.970.940.910.830.880.830.90
Votes considered519519519519519519519519

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.
GroupCohesionVotes countedSeats
The Left 0.9451944
Greens 0.9751953
S&D 0.94519135
Renew 0.9151978
EPP 0.83519184
ECR 0.8851984
Patriots 0.8351985
ESN 0.9051927

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.

  • 519 votes considered (all roll-call votes matching the filters; scope).
  • 23 of 87 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 26 Sept 2026, 03:32 UTC (data stamp 579b2832c723, 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.

Data source
Licensed CC BY 4.0.
Data version
data version 579b2832c723 (26 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
26 September 2026

Cite as

EU Parl Watch Research (2026). “Cohesion — All roll calls · whole term, 16 Jul 2024 – 26 Sept 2026 · topic Climate & environment (model-assigned) · political groups · per part-session · abstentions counted”. Analysis. EU Parl Watch Research. https://news.eu-parl.st-solutions.dev/analysis/cohesion?bucket=session&scope=all&topic=climate&to=2026-09-26 (retrieved 26 September 2026). Data: European Parliament Open Data, https://data.europarl.europa.eu/ (CC BY 4.0); data version 579b2832c723 (26 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-2026-09-26,
  author = {{EU Parl Watch Research}},
  title = {{Cohesion — All roll calls · whole term, 16 Jul 2024 – 26 Sept 2026 · topic Climate \& environment (model-assigned) · political groups · per part-session · abstentions counted}},
  year = {2026},
  howpublished = {\url{https://news.eu-parl.st-solutions.dev/analysis/cohesion?bucket=session&scope=all&topic=climate&to=2026-09-26}},
  url = {https://news.eu-parl.st-solutions.dev/analysis/cohesion?bucket=session&scope=all&topic=climate&to=2026-09-26},
  urldate = {2026-09-26},
  publisher = {EU Parl Watch Research},
  note = {Analysis. Data: European Parliament Open Data (CC BY 4.0); data version 579b2832c723 (26 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}
}