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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 · 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 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 20240.6164 votes0.7864 votes0.8864 votes0.9664 votes0.9164 votes0.7264 votes0.6664 votes0.7764 votes
Q4 20240.7267 votes0.8967 votes0.9167 votes0.9667 votes0.9567 votes0.6967 votes0.6867 votes0.8067 votes
Q1 20250.65152 votes0.84152 votes0.91152 votes0.92152 votes0.94152 votes0.80152 votes0.60152 votes0.76152 votes
Q2 20250.85115 votes0.89115 votes0.91115 votes0.84115 votes0.84115 votes0.82115 votes0.69115 votes0.73115 votes
Q3 20250.6822 votes0.8322 votes0.8822 votes0.8722 votes0.9322 votes0.8422 votes0.6622 votes0.7422 votes
Q4 20250.6572 votes0.8672 votes0.9472 votes0.9672 votes0.9672 votes0.7772 votes0.5772 votes0.7572 votes
Q1 20260.7282 votes0.8882 votes0.9282 votes0.9182 votes0.9582 votes0.7882 votes0.6082 votes0.7382 votes
Q2 20260.8323 votes0.8823 votes0.9423 votes0.9723 votes0.9823 votes0.8823 votes0.7123 votes0.7323 votes
Q3 20260.85106 votes0.94106 votes0.96106 votes0.98106 votes0.93106 votes0.81106 votes0.80106 votes0.92106 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 quarter · abstentions counted”. Analysis. EU Parl Watch Research. https://news.eu-parl.st-solutions.dev/analysis/cohesion?bucket=quarter&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 quarter · abstentions counted}},
  year = {2026},
  howpublished = {\url{https://news.eu-parl.st-solutions.dev/analysis/cohesion?bucket=quarter&scope=all&topic=defence&to=2026-09-25}},
  url = {https://news.eu-parl.st-solutions.dev/analysis/cohesion?bucket=quarter&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}
}