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Analysis

Cohesion

All roll calls · whole term, 16 Jul 2024 – 25 Sept 2026 · topic Defence & security (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, 17 Jul 2024 – 18 Jul 2024 to 14 Sept 2026 – 17 Sept 2026: Agreement Index from 0 (evenly split) to 1 (all voted the same).

17 Jul 2024 – 18 Jul 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
17 Jul 2024 – 18 Jul 20240.6721 votes0.7521 votes0.8321 votes0.9421 votes0.8921 votes0.7221 votes0.6821 votes0.8321 votes
16 Sept 2024 – 19 Sept 20240.5843 votes0.8043 votes0.9043 votes0.9743 votes0.9143 votes0.7243 votes0.6443 votes0.7543 votes
7 Oct 2024 – 10 Oct 2024—8 votes—8 votes—8 votes—8 votes—8 votes—8 votes—8 votes—8 votes
21 Oct 2024 – 24 Oct 2024—5 votes—5 votes—5 votes—5 votes—5 votes—5 votes—5 votes—5 votes
13 Nov 2024 – 14 Nov 2024—8 votes—8 votes—8 votes—8 votes—8 votes—8 votes—8 votes—8 votes
25 Nov 2024 – 28 Nov 20240.7126 votes0.8026 votes0.8126 votes0.9226 votes0.9326 votes0.5726 votes0.6226 votes0.7726 votes
17 Dec 2024 – 19 Dec 20240.8420 votes0.9520 votes0.9720 votes0.9820 votes0.9820 votes0.6920 votes0.8720 votes0.8820 votes
10 Mar 2025 – 13 Mar 20250.65152 votes0.84152 votes0.91152 votes0.92152 votes0.94152 votes0.80152 votes0.60152 votes0.76152 votes
31 Mar 2025 – 3 Apr 20250.85115 votes0.89115 votes0.91115 votes0.84115 votes0.84115 votes0.82115 votes0.69115 votes0.73115 votes
7 Jul 2025 – 10 Jul 2025—14 votes—14 votes—14 votes—14 votes—14 votes—14 votes—14 votes—14 votes
8 Sept 2025 – 11 Sept 2025—8 votes—8 votes—8 votes—8 votes—8 votes—8 votes—8 votes—8 votes
6 Oct 2025 – 9 Oct 2025—16 votes—16 votes—16 votes—16 votes—16 votes—16 votes—16 votes—16 votes
20 Oct 2025 – 23 Oct 2025—1 vote—1 vote—1 vote—1 vote—1 vote—1 vote—1 vote—1 vote
24 Nov 2025 – 27 Nov 20250.6141 votes0.8941 votes0.9641 votes0.9841 votes0.9641 votes0.7241 votes0.5641 votes0.7741 votes
15 Dec 2025 – 18 Dec 2025—14 votes—14 votes—14 votes—14 votes—14 votes—14 votes—14 votes—14 votes
20 Jan 2026 – 22 Jan 20260.7334 votes0.8334 votes0.8834 votes0.9134 votes0.9434 votes0.7834 votes0.7034 votes0.7234 votes
9 Feb 2026 – 12 Feb 2026—1 vote—1 vote—1 vote—1 vote—1 vote—1 vote—1 vote—1 vote
24 Feb 20260.7143 votes0.9143 votes0.9543 votes0.9143 votes0.9543 votes0.7943 votes0.5243 votes0.7043 votes
9 Mar 2026 – 12 Mar 2026—4 votes—4 votes—4 votes—4 votes—4 votes—4 votes—4 votes—4 votes
15 Jun 2026 – 18 Jun 20260.8323 votes0.8823 votes0.9423 votes0.9723 votes0.9823 votes0.8823 votes0.7123 votes0.7323 votes
6 Jul 2026 – 9 Jul 2026—8 votes—8 votes—8 votes—8 votes—8 votes—8 votes—8 votes—8 votes
14 Sept 2026 – 17 Sept 20260.8598 votes0.9498 votes0.9798 votes0.9798 votes0.9398 votes0.8098 votes0.8298 votes0.9398 votes
Whole period0.730.870.920.930.930.790.660.78
Votes considered703703703703703703703703

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 0.7370344
Greens 0.8770353
S&D 0.92703135
Renew 0.9370378
EPP 0.93703184
ECR 0.7970384
Patriots 0.6670385
ESN 0.7870327

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.

  • 703 votes considered (all roll-call votes matching the filters; scope).
  • 2 of 38 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 25 Sept 2026, 03:36 UTC (data stamp f37e5638cded, 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 f37e5638cded (25 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
25 September 2026

Cite as

EU Parl Watch Research (2026). “Cohesion — All roll calls · whole term, 16 Jul 2024 – 25 Sept 2026 · topic Defence & security (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=defence&to=2026-09-25 (retrieved 25 September 2026). Data: European Parliament Open Data, https://data.europarl.europa.eu/ (CC BY 4.0); data version f37e5638cded (25 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-2026-09-25,
  author = {{EU Parl Watch Research}},
  title = {{Cohesion — All roll calls · whole term, 16 Jul 2024 – 25 Sept 2026 · topic Defence \& security (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=defence&to=2026-09-25}},
  url = {https://news.eu-parl.st-solutions.dev/analysis/cohesion?bucket=session&scope=all&topic=defence&to=2026-09-25},
  urldate = {2026-09-25},
  publisher = {EU Parl Watch Research},
  note = {Analysis. Data: European Parliament Open Data (CC BY 4.0); data version f37e5638cded (25 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}
}