Analysis
Cohesion
All roll calls · whole term, 16 Jul 2024 – 26 Sept 2026 · topic Climate & environment (model-assigned) · political groups · per month · 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 month, 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.
Sept 2024 → 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
| Period | The Left | Greens | S&D | Renew | EPP | ECR | Patriots | ESN |
|---|---|---|---|---|---|---|---|---|
| Sept 2024 | 0.8822 votes | 0.9822 votes | 0.9522 votes | 0.9322 votes | 0.8922 votes | 0.8322 votes | 0.7722 votes | 0.7822 votes |
| Nov 2024 | 0.9926 votes | 0.9926 votes | 0.9826 votes | 0.8526 votes | 0.8226 votes | 0.8226 votes | 0.8626 votes | 0.9526 votes |
| Dec 2024 | —2 votes | —2 votes | —2 votes | —2 votes | —2 votes | —2 votes | —2 votes | —2 votes |
| Apr 2025 | 0.9331 votes | 0.9331 votes | 0.9231 votes | 0.9031 votes | 0.9131 votes | 0.9631 votes | 0.8031 votes | 0.9231 votes |
| May 2025 | 0.9460 votes | 0.9860 votes | 0.9360 votes | 0.9560 votes | 0.7760 votes | 0.8860 votes | 0.8560 votes | 0.9360 votes |
| Jun 2025 | 0.8934 votes | 0.8834 votes | 0.9234 votes | 0.9634 votes | 0.9234 votes | 0.9234 votes | 0.7434 votes | 0.9134 votes |
| Jul 2025 | 1.0037 votes | 1.0037 votes | 0.9937 votes | 0.9537 votes | 0.7237 votes | 0.8137 votes | 0.6237 votes | 0.8837 votes |
| Sept 2025 | 0.9533 votes | 0.9933 votes | 0.9633 votes | 0.9833 votes | 0.9333 votes | 0.8333 votes | 0.9433 votes | 0.9033 votes |
| Oct 2025 | 0.9745 votes | 0.9945 votes | 0.9745 votes | 0.9145 votes | 0.7945 votes | 0.8545 votes | 0.8045 votes | 0.9145 votes |
| Nov 2025 | 0.9777 votes | 0.9677 votes | 0.9777 votes | 0.8977 votes | 0.7977 votes | 0.9877 votes | 0.9177 votes | 0.9177 votes |
| Dec 2025 | —10 votes | —10 votes | —10 votes | —10 votes | —10 votes | —10 votes | —10 votes | —10 votes |
| Feb 2026 | —2 votes | —2 votes | —2 votes | —2 votes | —2 votes | —2 votes | —2 votes | —2 votes |
| Mar 2026 | —12 votes | —12 votes | —12 votes | —12 votes | —12 votes | —12 votes | —12 votes | —12 votes |
| Apr 2026 | 0.8728 votes | 0.9828 votes | 0.7628 votes | 0.7328 votes | 0.8428 votes | 0.9128 votes | 0.7828 votes | 0.8628 votes |
| May 2026 | 0.9535 votes | 0.9935 votes | 0.9735 votes | 0.9335 votes | 0.7935 votes | 0.8635 votes | 0.8435 votes | 0.8735 votes |
| Jun 2026 | 0.9321 votes | 0.9621 votes | 0.9421 votes | 0.8821 votes | 0.9221 votes | 0.8021 votes | 0.8421 votes | 0.8121 votes |
| Jul 2026 | —11 votes | —11 votes | —11 votes | —11 votes | —11 votes | —11 votes | —11 votes | —11 votes |
| Sept 2026 | 0.9133 votes | 0.9733 votes | 0.9733 votes | 0.9333 votes | 0.8533 votes | 0.8733 votes | 0.8933 votes | 0.9533 votes |
| Whole period | 0.94 | 0.97 | 0.94 | 0.91 | 0.83 | 0.88 | 0.83 | 0.90 |
| Votes considered | 519 | 519 | 519 | 519 | 519 | 519 | 519 | 519 |
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 | 0.94 | 519 | 44 |
| Greens | 0.97 | 519 | 53 |
| S&D | 0.94 | 519 | 135 |
| Renew | 0.91 | 519 | 78 |
| EPP | 0.83 | 519 | 184 |
| ECR | 0.88 | 519 | 84 |
| Patriots | 0.83 | 519 | 85 |
| ESN | 0.90 | 519 | 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.
- 519 votes considered (all roll-call votes matching the filters; scope).
- 23 of 87 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 26 Sept 2026, 03:32 UTC (data stamp 579b2832c723, code 6d4005c55bde; what the stamp is).
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 579b2832c723 (26 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
- 26 September 2026
Cite as
EU Parl Watch Research (2026). “Cohesion — All roll calls · whole term, 16 Jul 2024 – 26 Sept 2026 · topic Climate & environment (model-assigned) · political groups · per month · abstentions counted”. Analysis. EU Parl Watch Research. https://news.eu-parl.st-solutions.dev/analysis/cohesion?bucket=month&scope=all&topic=climate&to=2026-09-26 (retrieved 26 September 2026). Data: European Parliament Open Data, https://data.europarl.europa.eu/ (CC BY 4.0); data version 579b2832c723 (26 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-2026-09-26,
author = {{EU Parl Watch Research}},
title = {{Cohesion — All roll calls · whole term, 16 Jul 2024 – 26 Sept 2026 · topic Climate \& environment (model-assigned) · political groups · per month · abstentions counted}},
year = {2026},
howpublished = {\url{https://news.eu-parl.st-solutions.dev/analysis/cohesion?bucket=month&scope=all&topic=climate&to=2026-09-26}},
url = {https://news.eu-parl.st-solutions.dev/analysis/cohesion?bucket=month&scope=all&topic=climate&to=2026-09-26},
urldate = {2026-09-26},
publisher = {EU Parl Watch Research},
note = {Analysis. Data: European Parliament Open Data (CC BY 4.0); data version 579b2832c723 (26 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}
}