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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 quarter · for and against only

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 quarter, 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 quarter, Q3 2024 to Q3 2026: Agreement Index from 0 (evenly split) to 1 (all voted the same).

Q3 2024 → Q3 2026; each panel highlights one series, the others faint behind it.

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
Q3 20240.7064 votes0.7664 votes0.8964 votes0.9764 votes0.9564 votes0.7364 votes0.8364 votes0.8564 votes
Q4 20240.7867 votes0.9267 votes0.9267 votes0.9767 votes0.9767 votes0.8067 votes0.7667 votes0.8967 votes
Q1 20250.74152 votes0.85152 votes0.91152 votes0.91152 votes0.94152 votes0.86152 votes0.70152 votes0.79152 votes
Q2 20250.91115 votes0.91115 votes0.91115 votes0.84115 votes0.84115 votes0.87115 votes0.79115 votes0.79115 votes
Q3 20250.7222 votes0.8422 votes0.8722 votes0.8722 votes0.9422 votes0.9022 votes0.7222 votes0.7422 votes
Q4 20250.7272 votes0.8772 votes0.9472 votes0.9672 votes0.9872 votes0.8772 votes0.6972 votes0.7972 votes
Q1 20260.7982 votes0.8882 votes0.9282 votes0.9182 votes0.9682 votes0.8482 votes0.7682 votes0.7682 votes
Q2 20260.8723 votes0.9023 votes0.9423 votes0.9823 votes0.9823 votes0.9523 votes0.8723 votes0.8523 votes
Q3 20260.90106 votes0.93106 votes0.95106 votes0.98106 votes0.92106 votes0.90106 votes0.91106 votes0.94106 votes
Whole period0.800.880.920.920.930.850.780.83
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 0.8070344
Greens 0.8870353
S&D 0.92703135
Renew 0.9270378
EPP 0.93703184
ECR 0.8570384
Patriots 0.7870385
ESN 0.8370327

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 quarter · for and against only”. Analysis. EU Parl Watch Research. https://news.eu-parl.st-solutions.dev/analysis/cohesion?scope=all&topic=defence&variant=forAgainst&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 quarter · for and against only}},
  year = {2026},
  howpublished = {\url{https://news.eu-parl.st-solutions.dev/analysis/cohesion?scope=all&topic=defence&variant=forAgainst&to=2026-09-25}},
  url = {https://news.eu-parl.st-solutions.dev/analysis/cohesion?scope=all&topic=defence&variant=forAgainst&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}
}