Analysis
Cohesion
All roll calls · whole term, 16 Jul 2024 – 25 Sept 2026 · topic EU institutions & Parliament (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?
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.
Q4 2024 → Q3 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
| Period | The Left | Greens | S&D | Renew | EPP | ECR | Patriots | ESN |
|---|---|---|---|---|---|---|---|---|
| Q4 2024 | 0.8744 votes | 0.9444 votes | 0.9144 votes | 0.9644 votes | 0.9644 votes | 0.7644 votes | 0.8844 votes | 0.8844 votes |
| Q1 2025 | —2 votes | —2 votes | —2 votes | —2 votes | —2 votes | —2 votes | —2 votes | —1 vote |
| Q2 2025 | 0.8956 votes | 0.9756 votes | 0.9656 votes | 0.9356 votes | 0.9356 votes | 0.7456 votes | 0.8156 votes | 0.8656 votes |
| Q3 2025 | —3 votes | —3 votes | —3 votes | —3 votes | —3 votes | —3 votes | —3 votes | —3 votes |
| Q4 2025 | 0.7582 votes | 0.9882 votes | 0.9382 votes | 0.9382 votes | 0.7982 votes | 0.8682 votes | 0.9082 votes | 0.9182 votes |
| Q1 2026 | 0.8750 votes | 0.9650 votes | 0.9550 votes | 0.9350 votes | 0.9250 votes | 0.9350 votes | 0.9550 votes | 0.9750 votes |
| Q2 2026 | 0.9149 votes | 0.9849 votes | 0.9449 votes | 0.9749 votes | 0.8949 votes | 0.8649 votes | 0.8449 votes | 0.9449 votes |
| Q3 2026 | —6 votes | —6 votes | —6 votes | —6 votes | —6 votes | —6 votes | —6 votes | —6 votes |
| Whole period | 0.85 | 0.97 | 0.93 | 0.94 | 0.89 | 0.84 | 0.88 | 0.91 |
| Votes considered | 292 | 292 | 292 | 292 | 292 | 292 | 292 | 291 |
Over the whole selection
Each group’s Agreement Index over every vote in the selection where enough of its members voted.
| Group | Cohesion | Votes counted | Seats |
|---|---|---|---|
| The Left | 0.85 | 292 | 44 |
| Greens | 0.97 | 292 | 53 |
| S&D | 0.93 | 292 | 135 |
| Renew | 0.94 | 292 | 78 |
| EPP | 0.89 | 292 | 184 |
| ECR | 0.84 | 292 | 84 |
| Patriots | 0.88 | 292 | 85 |
| ESN | 0.91 | 291 | 27 |
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.
- 292 votes considered (all roll-call votes matching the filters; scope).
- 75 of 115 decisions in the period had no final vote recorded by name (a show of hands or a count without names) and cannot be measured.
- 1 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).
Sources & citation
Where the facts on this page come from, and how to cite it.
- Permalink
- https://news.eu-parl.st-solutions.dev/analysis/cohesion?scope=all&topic=institutions&to=2026-09-25
- 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 EU institutions & Parliament (model-assigned) · political groups · per quarter · abstentions counted”. Analysis. EU Parl Watch Research. https://news.eu-parl.st-solutions.dev/analysis/cohesion?scope=all&topic=institutions&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 EU institutions \& Parliament (model-assigned) · political groups · per quarter · abstentions counted}},
year = {2026},
howpublished = {\url{https://news.eu-parl.st-solutions.dev/analysis/cohesion?scope=all&topic=institutions&to=2026-09-25}},
url = {https://news.eu-parl.st-solutions.dev/analysis/cohesion?scope=all&topic=institutions&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}
}