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Analysis

Cohesion

All roll calls · whole term, 16 Jul 2024 – 25 Sept 2026 · 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.

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 20240.7124 votes0.7724 votes0.8524 votes0.9324 votes0.9024 votes0.7524 votes0.7124 votes0.8323 votes
16 Sept 2024 – 19 Sept 20240.7296 votes0.9096 votes0.9196 votes0.9695 votes0.9296 votes0.8296 votes0.6696 votes0.7495 votes
7 Oct 2024 – 10 Oct 20240.6625 votes0.9625 votes0.9625 votes0.9725 votes0.9425 votes0.7825 votes0.5125 votes0.8025 votes
21 Oct 2024 – 24 Oct 20240.87154 votes0.91154 votes0.90154 votes0.90154 votes0.90154 votes0.76154 votes0.71154 votes0.82154 votes
13 Nov 2024 – 14 Nov 20240.8738 votes0.9738 votes0.9638 votes0.8938 votes0.8638 votes0.8338 votes0.8138 votes0.9138 votes
25 Nov 2024 – 28 Nov 20240.7887 votes0.8588 votes0.8788 votes0.8388 votes0.8288 votes0.7088 votes0.7088 votes0.8588 votes
17 Dec 2024 – 19 Dec 20240.9291 votes0.9691 votes0.9591 votes0.9591 votes0.8491 votes0.8191 votes0.8191 votes0.8791 votes
20 Jan 2025 – 23 Jan 20250.8350 votes0.9450 votes0.9549 votes0.9750 votes0.9146 votes0.8950 votes0.7450 votes0.6948 votes
10 Feb 2025 – 13 Feb 20250.7973 votes0.9473 votes0.9273 votes0.9373 votes0.9272 votes0.6973 votes0.6673 votes0.8473 votes
10 Mar 2025 – 13 Mar 20250.75263 votes0.88263 votes0.94263 votes0.91263 votes0.91263 votes0.81263 votes0.67263 votes0.80262 votes
31 Mar 2025 – 3 Apr 20250.89351 votes0.92351 votes0.92351 votes0.90351 votes0.87350 votes0.82351 votes0.76351 votes0.82351 votes
5 May 2025 – 8 May 20250.90338 votes0.95338 votes0.95338 votes0.94338 votes0.88338 votes0.84338 votes0.82338 votes0.92338 votes
21 May 2025 – 22 May 20250.8755 votes0.9555 votes0.9755 votes0.9455 votes0.8955 votes0.8355 votes0.8355 votes0.8655 votes
16 Jun 2025 – 19 Jun 20250.89221 votes0.97221 votes0.95221 votes0.94221 votes0.90221 votes0.79221 votes0.74221 votes0.86221 votes
7 Jul 2025 – 10 Jul 20250.86226 votes0.95226 votes0.95226 votes0.96226 votes0.87226 votes0.79226 votes0.74226 votes0.85226 votes
8 Sept 2025 – 11 Sept 20250.90205 votes0.92205 votes0.93205 votes0.90205 votes0.91205 votes0.86205 votes0.81205 votes0.78205 votes
6 Oct 2025 – 9 Oct 20250.88127 votes0.95127 votes0.92127 votes0.82127 votes0.82127 votes0.81127 votes0.81127 votes0.88127 votes
20 Oct 2025 – 23 Oct 20250.87257 votes0.93257 votes0.94257 votes0.92257 votes0.87257 votes0.77257 votes0.80257 votes0.88257 votes
13 Nov 20250.97267 votes0.98267 votes0.96267 votes0.93267 votes0.86267 votes0.95267 votes0.88267 votes0.92267 votes
24 Nov 2025 – 27 Nov 20250.83303 votes0.95303 votes0.96303 votes0.91303 votes0.88303 votes0.82303 votes0.76303 votes0.82303 votes
15 Dec 2025 – 18 Dec 20250.93155 votes0.96155 votes0.89155 votes0.87155 votes0.81155 votes0.79155 votes0.84155 votes0.83155 votes
20 Jan 2026 – 22 Jan 20260.85236 votes0.90237 votes0.91237 votes0.92237 votes0.90237 votes0.86237 votes0.77237 votes0.80237 votes
9 Feb 2026 – 12 Feb 20260.95194 votes0.97194 votes0.97194 votes0.86194 votes0.84194 votes0.76194 votes0.66194 votes0.86194 votes
24 Feb 20260.7143 votes0.9143 votes0.9543 votes0.9143 votes0.9543 votes0.7943 votes0.5243 votes0.7043 votes
9 Mar 2026 – 12 Mar 20260.90292 votes0.95292 votes0.87292 votes0.93292 votes0.93292 votes0.85292 votes0.77292 votes0.86292 votes
25 Mar 2026 – 26 Mar 20260.9072 votes0.8272 votes0.8772 votes0.8872 votes0.9772 votes0.8572 votes0.6872 votes0.8172 votes
27 Apr 2026 – 30 Apr 20260.89591 votes0.94591 votes0.94591 votes0.91591 votes0.89591 votes0.80591 votes0.80591 votes0.90591 votes
18 May 2026 – 21 May 20260.93201 votes0.96201 votes0.96201 votes0.92201 votes0.88201 votes0.78201 votes0.71201 votes0.81201 votes
15 Jun 2026 – 18 Jun 20260.86245 votes0.94245 votes0.91245 votes0.91246 votes0.90246 votes0.78246 votes0.75245 votes0.81245 votes
6 Jul 2026 – 9 Jul 20260.86285 votes0.95285 votes0.90285 votes0.93285 votes0.93285 votes0.76285 votes0.73285 votes0.86285 votes
14 Sept 2026 – 17 Sept 20260.90360 votes0.96360 votes0.94360 votes0.91360 votes0.87360 votes0.84360 votes0.81360 votes0.91360 votes
Whole period0.870.940.930.910.890.810.760.85
Votes considered5,9255,9275,9265,9275,9225,9285,9275,922

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 0.875 92544
Greens 0.945 92753
S&D 0.935 926135
Renew 0.915 92778
EPP 0.895 922184
ECR 0.815 92884
Patriots 0.765 92785
ESN 0.855 92227

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.

  • 5 928 votes considered (all roll-call votes matching the filters; scope).
  • 174 of 794 decisions in the period had no final vote recorded by name (a show of hands or a count without names) and cannot be measured.
  • 20 times a bloc had too few members voting on a vote (fewer than 10, or under a third of its seats) and was left out of that vote (turnout rule).
  • 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 · 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&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 · political groups · per part-session · abstentions counted}},
  year = {2026},
  howpublished = {\url{https://news.eu-parl.st-solutions.dev/analysis/cohesion?bucket=session&scope=all&to=2026-09-25}},
  url = {https://news.eu-parl.st-solutions.dev/analysis/cohesion?bucket=session&scope=all&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}
}