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Member

Bartłomiej SIENKIEWICZ

EPP · Poland

Group
EPP PPE
Country
Poland
Roll-call participation
97.6 %ⓘ of 5 928 roll calls in office · chamber median 90.2 % · whole term, roll calls
With majority line
92.0 %ⓘ of 5 787 votes where the group had a line · EPP median 93.6 %
More facts (5)
National party
KO Koalicja Obywatelska
In office
Since 16 Jul 2024
Against clear line
312 of 5 512 votesⓘ
Committees
AFCO, LIBE (substitute)
Member id
86057
More

Record

The member’s figures against the median of their group and of the chamber. Each vote counts the member in the group they belonged to that day.

Roll-call participation ⓘ

97.6 %

5 787 of 5 928 roll calls while in office

EPP median: 89.9 % (+7.7 pts)

Chamber median: 90.2 %

With majority line ⓘ

92.0 %

5 326 of 5 787 votes where their group had a line

EPP median: 93.6 % (−1.6 pts)

Against clear line ⓘ

5.7 %

312 of 5 512 votes where their group had a clear line

249 opposite (for ↔ against), 60 abstained against the line, 3 voted for or against when the line was to abstain

Abstention ⓘ

1.9 %

111 of 5 787 votes cast

Participation 97.6 % — EPP median 89.9 %, 196 members.ⓘ
Data as a table
Participation among the 196 members of the EPP with enough votes.
FigureParticipation
Bartłomiej SIENKIEWICZ97.6 %
EPP median89.9 %
Lowest in the group17.0 %
Highest in the group99.6 %
Members196
With majority line 92.0 % — EPP median 93.6 %, 196 members.ⓘ
Data as a table
With majority line among the 196 members of the EPP with enough votes.
FigureWith majority line
Bartłomiej SIENKIEWICZ92.0 %
EPP median93.6 %
Lowest in the group70.2 %
Highest in the group99.5 %
Members196
  • Whole term, 5 928 roll-call votes. The dots are the other members of EPP; no ranks.
  • “No vote recorded” is not the same as absent: leave, illness and chairing the sitting look the same.
  • A group’s line is inferred from its members’ votes — Parliament publishes no whip.

Votes, 620

Export

Every final roll-call vote of the term with the member’s position, newest first.

Result: for–against–abstained. Majority line: how most of the member’s group voted that day (“Tie” when no position won). ≠ group marks a vote otherwise than a clear line (at least two thirds, with at least 10 members voting) of their group.
DateDecisionResultPositionMajority line
21 Jan 2026Request for opinion from the Court of Justice on the compatibility with the Treaties of the proposed EU-Mercosur Partnership Agreement (EMPA) and Interim Trade Agreement (ITA) Adopted 334 for, 324 against, 11 abstainedPosition: For ≠ groupMajority line: Against
21 Jan 2026Implementation of the common foreign and security policy – annual report 2025 Adopted 392 for, 179 against, 83 abstainedPosition: For Majority line: For
21 Jan 2026Implementation of the common security and defence policy – annual report 2025 Adopted 395 for, 197 against, 70 abstainedPosition: For Majority line: For
21 Jan 2026Human rights and democracy in the world and the European Union’s policy on the matter – annual report 2025 Adopted 421 for, 120 against, 108 abstainedPosition: For Majority line: For
21 Jan 2026Addressing impunity through EU sanctions, including the EU Global Human Rights sanctions regime (so-called ‘EU Magnitsky Act’) Adopted 440 for, 127 against, 59 abstainedPosition: For Majority line: For
20 Jan 2026Framework for strengthening the availability and security of supply of critical medicinal products as well as the availability of, and accessibility of, medicinal products of common interest Passed 503 for, 57 against, 108 abstainedPosition: For Majority line: For
20 Jan 2026The 28th Regime: a new legal framework for innovative companies Adopted 492 for, 144 against, 28 abstainedPosition: For Majority line: For
20 Jan 2026Just transition directive in the world of work: ensuring the creation of jobs and revitalising local economies Adopted 420 for, 207 against, 20 abstainedPosition: For Majority line: For
20 Jan 2026Safeguarding and promoting financial stability amid economic uncertainties Adopted 491 for, 83 against, 84 abstainedPosition: For Majority line: For
20 Jan 2026Humanitarian aid in a time of polycrisis – reaffirming our principles for a more effective and ambitious response to humanitarian crises Adopted 444 for, 153 against, 55 abstainedPosition: Abstained ≠ groupMajority line: For
20 Jan 2026Reform of the European Electoral Act – hurdles to ratification and implementation in the Member States Adopted 417 for, 234 against, 9 abstainedPosition: For Majority line: For
18 Dec 2025Arbitrary arrest and sentencing of academics Bahruz Samadov and Igbal Abilov in Azerbaijan Adopted 477 for, 7 against, 69 abstainedPosition: For Majority line: For
18 Dec 2025Mass kidnapping of children in Nigeria, including from St Mary’s Catholic School in Papiri Adopted 519 for, 2 against, 50 abstainedPosition: For Majority line: For
18 Dec 2025Grave political situation in Guinea-Bissau after the coup of 26 November Adopted 535 for, 0 against, 42 abstainedPosition: For Majority line: For
18 Dec 2025Implementation of the rule of law conditionality regime Adopted 386 for, 184 against, 15 abstainedPosition: For Majority line: For
18 Dec 2025Decarbonisation and modernisation of EU fisheries, and the development and deployment of fishing gear Adopted 450 for, 93 against, 37 abstainedPosition: For Majority line: For
18 Dec 2025Continuous Belarusian hybrid attacks against Lithuania Adopted 438 for, 37 against, 48 abstainedPosition: For Majority line: For
17 Dec 2025Application of the ‘safe third country’ concept Negotiating mandate approved 384 for, 237 against, 31 abstainedPosition: For Majority line: For
17 Dec 2025Establishment of a list of safe countries of origin at Union level Negotiating mandate approved 396 for, 202 against, 56 abstainedPosition: For Majority line: For
17 Dec 2025Phasing out Russian natural gas imports, improving monitoring of potential energy dependencies Passed 500 for, 120 against, 32 abstainedPosition: For Majority line: For
17 Dec 2025Deforestation Regulation: certain obligations of operators and traders Passed 405 for, 242 against, 8 abstainedPosition: For Majority line: For
17 Dec 2025European High Performance Computing Joint Undertaking (EuroHPC) Passed 604 for, 37 against, 18 abstainedPosition: For Majority line: For
17 Dec 2025EU/Jordan Agreement for scientific and technological cooperation: terms and conditions for the participation of Jordan in the Partnership for Research and Innovation in the Mediterranean Area (PRIMA) Consent given 627 for, 13 against, 5 abstainedPosition: For Majority line: For
17 Dec 2025Simplification of the content and presentation of information to be disclosed concerning environmentally sustainable activities and simplification of certain technical screening criteria for determining whether economic activities cause no significant harm to environmental objectives Objection failed 230 for, 402 against, 28 abstainedPosition: Against Majority line: Against
17 Dec 2025Military Mobility Adopted 493 for, 127 against, 38 abstainedPosition: For Majority line: For
17 Dec 2025European Defence Readiness 2030: assessment of needs Adopted 425 for, 120 against, 96 abstainedPosition: For Majority line: For
17 Dec 2025Digitalisation, artificial intelligence and algorithmic management in the workplace – shaping the future of work Adopted 480 for, 83 against, 94 abstainedPosition: For Majority line: For
17 Dec 2025European Citizens’ Initiative ‘My voice, my choice: for safe and accessible abortion’ Adopted 358 for, 202 against, 79 abstainedPosition: For Majority line: For
16 Dec 2025Bilateral safeguard clause of the EU-Mercosur Partnership Agreement and the EU-Mercosur Interim Trade Agreement for agricultural products Passed 431 for, 161 against, 70 abstainedPosition: For Majority line: For
16 Dec 2025Amending the Directive on alternative dispute resolution for consumer disputes Amendment 1 rejected 122 for, 470 against, 69 abstainedPosition: Against Majority line: Against
16 Dec 2025Incentivising defence-related investments in the EU budget to implement the ReArm Europe Plan Passed 519 for, 119 against, 25 abstainedPosition: For Majority line: For
16 Dec 2025Amending certain CAP Regulations as regards the conditionality system, types of intervention in the form of direct payment, types of intervention in certain sectors and rural development and annual performance reports, data and interoperability governance, suspensions of payments annual performance clearance and controls and penalties Passed 629 for, 17 against, 16 abstainedPosition: For Majority line: For
16 Dec 2025Providing macro-financial assistance to Jordan Passed 585 for, 34 against, 45 abstainedPosition: For Majority line: For
16 Dec 2025Brexit Adjustment Reserve Passed 619 for, 6 against, 37 abstainedPosition: For Majority line: For
16 Dec 2025Corporate sustainability reporting and due diligence requirements Passed 428 for, 218 against, 17 abstainedPosition: For Majority line: For
16 Dec 2025Mobilisation of the European Globalisation Adjustment Fund for Displaced Workers: application EGF/2025/003 SE/Northvolt – Sweden Passed 578 for, 54 against, 30 abstainedPosition: For Majority line: For
16 Dec 2025Genetically modified maize NK603 Objection passed 479 for, 173 against, 8 abstainedPosition: Against Majority line: Against
16 Dec 2025Genetically modified sugar beet KWS20-1 Objection passed 455 for, 169 against, 8 abstainedPosition: Against Majority line: Against
16 Dec 2025Relations between the EU and Saudi Arabia Adopted 417 for, 131 against, 108 abstainedPosition: For Majority line: For
27 Nov 2025Amending Regulations on the Internal Market Information System (IMI) and on the single digital gateway as regards certain harmonisation requirements on transparency Passed 400 for, 77 against, 132 abstainedPosition: For Majority line: For
27 Nov 2025Harmonised requirements in the internal market on transparency of third countries interest representation Passed 392 for, 88 against, 133 abstainedPosition: For Majority line: For
27 Nov 2025Post-election killings and the deteriorating human rights situation in Tanzania, including the case of imprisoned opposition leader Tundu Lissu Adopted 539 for, 0 against, 27 abstainedPosition: For Majority line: For
27 Nov 2025Escalating repression of the Baha’is in Iran Adopted 549 for, 7 against, 31 abstainedPosition: For Majority line: For
27 Nov 2025Rule of law and human rights situation in Tunisia, particularly the case of Sonia Dahmani Adopted 464 for, 58 against, 75 abstainedPosition: For Majority line: For
27 Nov 2025Implementation of the EU-UK Trade and Cooperation Agreement Adopted 490 for, 41 against, 74 abstainedPosition: For Majority line: For
27 Nov 2025EU strategy for the rights of persons with disabilities post-2024 Adopted 490 for, 9 against, 109 abstainedPosition: For Majority line: For
27 Nov 2025Application of the Treaty provisions related to the principles of subsidiarity and proportionality and the role of national parliaments in the EU legislative process Adopted 337 for, 245 against, 12 abstainedPosition: For Majority line: For
27 Nov 2025Escalation of the war and the humanitarian catastrophe in Sudan Adopted 503 for, 32 against, 52 abstainedPosition: For Majority line: For
27 Nov 2025Political situation in Myanmar including the humanitarian crisis of the Rohingya Adopted 519 for, 3 against, 57 abstainedPosition: For Majority line: For
27 Nov 2025EU position on the proposed plan and EU engagement towards a just and lasting peace for Ukraine Adopted 401 for, 70 against, 90 abstainedPosition: For Majority line: For

Show all 50 votes on this page

Roll-call participation

One cell per sitting while in office, shaded by the share of that day’s roll calls the member voted in. The official attendance register is kept separately by Parliament.

No vote recorded on 6 of 107 sittings with roll calls.

"No vote recorded" is not the same as absent: leave, illness and chairing the sitting look the same.

Data as a table
Roll calls held at each sitting while in office and how many of them the member voted in.
SittingRoll callsVoted in
17 Jul 2024230
18 Jul 202410
16 Sept 202422
18 Sept 202422
19 Sept 20249292
7 Oct 202422
8 Oct 202411
9 Oct 20241818
10 Oct 202444
21 Oct 202422
22 Oct 20241010
23 Oct 2024129126
24 Oct 20241313
13 Nov 202422
14 Nov 20243636
25 Nov 202422
26 Nov 20241818
27 Nov 20241110
28 Nov 20245756
17 Dec 20241313
18 Dec 20243333
19 Dec 20244545
20 Jan 202522
21 Jan 202511
22 Jan 202522
23 Jan 20254541
10 Feb 202511
11 Feb 20253232
12 Feb 20251010
13 Feb 2025300
10 Mar 202522
11 Mar 202599
12 Mar 2025228224
13 Mar 20252421
31 Mar 202533
1 Apr 20253534
2 Apr 2025251249
3 Apr 20256262
5 May 202555
6 May 20251010
7 May 2025220213
8 May 2025103102
21 May 202522
22 May 20255353
16 Jun 202520
17 Jun 20254141
18 Jun 20259190
19 Jun 20258785
7 Jul 202510
8 Jul 20255554
9 Jul 2025134132
10 Jul 20253636
8 Sept 202511
9 Sept 2025101100
10 Sept 20253434
11 Sept 20256952
6 Oct 202522
7 Oct 202555
8 Oct 20255554
9 Oct 20256564
20 Oct 202533
21 Oct 20251312
22 Oct 2025186186
23 Oct 20255554
13 Nov 2025267262
24 Nov 202530
25 Nov 20257575
26 Nov 202510097
27 Nov 2025125125
15 Dec 202544
16 Dec 20256665
17 Dec 20254343
18 Dec 20254241
20 Jan 20266767
21 Jan 2026112112
22 Jan 20265858
9 Feb 202622
10 Feb 20263838
11 Feb 20261313
12 Feb 2026141140
24 Feb 20264343
9 Mar 202611
10 Mar 2026197194
11 Mar 20266060
12 Mar 20263434
25 Mar 202633
26 Mar 20266969
27 Apr 202622
28 Apr 2026225225
29 Apr 2026296294
30 Apr 20266868
18 May 202644
19 May 202633
20 May 20269695
21 May 20269897
15 Jun 202622
16 Jun 20264040
17 Jun 2026127126
18 Jun 20267777
6 Jul 202622
7 Jul 20267272
8 Jul 2026144143
9 Jul 20266766
14 Sept 202611
15 Sept 2026155152
16 Sept 20268079
17 Sept 2026124123

Voting neighbours

Members who voted the same way most often in the roll calls they both took part in, within and outside the member’s group (group at the date of each vote), over all roll calls of the term.

At least 200 shared roll calls over at least six months in office together. Within = both sat in the same group on the date of the vote; a member who changed group can appear on both lists. Baseline = the median agreement of all pairs of members of the groups the two sat in on the date of each shared vote (within: the group they shared; outside: the two groups), weighted by the votes they shared in each combination.

Within EPP

Agreement: roll calls where both cast the same position, of the roll calls both voted in while in the same group (“shared”); a count below 50 shared. Baseline: the median agreement of every pair of members of that group.
SelectMemberGroupCountryAgreementBaseline
Bogdan Andrzej ZDROJEWSKI EPPPoland95 % of 5 713 shared89 %
Andrzej BUŁA EPPPoland95 % of 5 306 shared89 %
Andrzej HALICKI EPPPoland95 % of 5 275 shared89 %
Ewa KOPACZ EPPPoland95 % of 5 723 shared89 %
Krzysztof BREJZA EPPPoland95 % of 5 397 shared89 %
Magdalena ADAMOWICZ EPPPoland95 % of 5 396 shared89 %
Mirosława NYKIEL EPPPoland94 % of 5 171 shared89 %
Jagna MARCZUŁAJTIS-WALCZAK EPPPoland94 % of 5 439 shared89 %
Bartosz ARŁUKOWICZ EPPPoland94 % of 5 531 shared89 %
Marta WCISŁO EPPPoland94 % of 5 527 shared89 %

Show all 10 neighbours

Outside the group

Agreement: roll calls where both cast the same position, of the roll calls both voted in while in different groups (“shared”); a count below 50 shared. Baseline: the median agreement of every pair of members of the groups the two sat in on those votes (groups at the date, weighted by the votes shared in each combination).
SelectMemberGroupCountryAgreementBaseline
Urmas PAET RenewEstonia84 % of 5 181 shared82 %
Eugen TOMAC RenewRomania82 % of 4 183 shared82 %
Dan BARNA RenewRomania82 % of 5 114 shared82 %
Hilde VAUTMANS RenewBelgium82 % of 5 608 shared82 %
Katri KULMUNI RenewFinland82 % of 4 574 shared82 %
Jeannette BALJEU RenewNetherlands81 % of 5 077 shared82 %
Ivars IJABS RenewLatvia81 % of 4 425 shared82 %
Bart GROOTHUIS RenewNetherlands81 % of 4 378 shared82 %
Benoit CASSART RenewBelgium81 % of 5 306 shared82 %
Anouk VAN BRUG RenewNetherlands81 % of 4 350 shared82 %

Show all 10 neighbours

Work

Seats in committees, delegations and intergroups, and the dossiers the member leads, shadows or negotiates.

Seats

Body: the committee, delegation or intergroup, with its kind. Role: the member’s role in it. From, To: the dates of the seat (“now” while it lasts).
BodyRoleFromTo
Committee on Constitutional AffairsAFCO CommitteeMember19 Jul 2024now
Committee on Civil Liberties, Justice and Home AffairsLIBE CommitteeSubstitute19 Jul 2024now
Special Committee on the European Democracy ShieldEUDS Special committeeMember23 Jan 2025now
Delegation to the EU-Russia Parliamentary Cooperation CommitteeD-RU DelegationMember16 Jul 2024now
Delegation for relations with the Maghreb countries and the Arab Maghreb Union, including the EU-Morocco, EU-Tunisia and EU-Algeria Joint Parliamentary CommitteesDMAG DelegationMember19 Sept 2024now

Show all 5 seats

Dossiers

Dossier: the procedure the declaration names (“No dossier named” for a delegation without one). Role: rapporteur, shadow rapporteur, negotiator or delegation. Committee: the committee that appointed them. Date: of the declaration.
DossierRoleCommitteeDate
No dossier namedDelegation vice-chairD-RU4 Sept 2026
Monitoring and controlling drug precursors and repealing Regulations (EC) No 273/2004 and (EC) No 111/2005RapporteurLIBE10 Feb 2026
Delegation to Morocco for Morocco-EU Joint Parliamentary CommitteeOfficial delegationDMAG22 Oct 2025
EUROPEAN PARLIAMENT’S RIGHT OF INQUIRYShadow rapporteurAFCO10 Jan 2025
No dossier namedDelegation vice-chairD-RU30 Sept 2024
Commission proposal for a Regulation amending Regulation (EU) 2021/1148 (Instrument for Financial Support for Border Management and Visa Policy) as regards the financial envelope and the allocation for the thematic facility - 2024/0059(COD) -Shadow rapporteurLIBE10 Sept 2024

Show all 6 dossier roles

Topics they work on (model-assigned)

Counts: dossiers they spoke on, led or amended, and their questions and motions.

In the chamber

Speeches and statements in plenary debates, newest first; the verbatim report is on Parliament’s site.

21 contributions recorded; 2 on behalf of their group; 31 minutes of speaking time.

Date: the sitting. Debate: the item debated, and the group when they spoke on its behalf. Kind: speech or written statement, with speaking time. Verbatim: the verbatim report on Parliament’s site.
DateDebateKindVerbatim
15 Sept 2026The recent hybrid attacks and instrumentalisation of migrants in Ceuta and the need for a coordinated response to protect the EU’s external borders (debate) Speech · 1 minRead
15 Sept 2026Findings and recommendations of the Special Committee on the European Democracy Shield (debate) Speech · 2 minRead
19 May 2026Europe's response to reduced US military deployments in Europe, particularly at its Eastern flank in the light of the latest US decisions (debate) Speech · 1 minRead
19 May 2026EU governance under pressure – institutional responses to global challenges (debate) on behalf of EPPSpeech · 2 minRead
29 Apr 2026Danger of normalising relations with Russia, including its participation in major cultural and sports events (debate) Speech · 1 minRead
21 Jan 2026Restoring control of migration: returns, visa policy and third-country cooperation (topical debate) Speech · 2 minRead
17 Dec 2025Cases of pro-Russian espionage in the European Parliament (debate) Speech · 2 minRead
15 Dec 2025Murder of Mehdi Kessaci - urgent need for ambitious European action against drug trafficking (debate) Speech · 1 minRead
8 Oct 2025United response to recent Russian violations of the EU Member States’ airspace and critical infrastructure (debate) Speech · 1 minRead
10 Sept 2025State of the Union (debate) Speech · 1 minRead

Show all 21 recent contributions

Questions and motions, 23

Parliamentary questions and motions for resolutions the member authored or co-signed, newest first.

Date: tabled. Title: the question or motion, with its id. Kind: written question or motion for a resolution, with the number of co-authors. Answer: the date of the answer to a question.
DateTitleKindAnswer
13 Jul 2026Missing and runaway children as an indicator of violence, abuse and grooming E-10-2026-002868Written questionwith 15 co-authorsNot yet answered
29 Jun 2026Protecting minors online from manipulation, bullying and grooming E-10-2026-002680Written questionwith 9 co-authors11 Sept 2026
10 Jun 2026MOTION FOR A RESOLUTION on the recruitment of children by organised crime B-10-2026-0275Motion for a resolutionwith 33 co-authors—
9 Jun 2026Chinese tomato concentrate imports: protecting EU producers and food security P-10-2026-002375Priority written questionwith 23 co-authors13 Jul 2026
20 May 2026Russia’s admission to the Biennale Festival and EU funding E-10-2026-002082Written question16 Jul 2026
25 Mar 2026Ensuring competition and strategic autonomy in the AI gigafactory supply chain E-10-2026-001255Written questionwith 17 co-authors19 Jun 2026
24 Feb 2026Ensuring risk assessment as the basis for proportionate regulation of cosmetic products E-10-2026-000762Written questionwith 20 co-authors16 Apr 2026
18 Feb 2026Checks on the presence of prohibited substances and trace impurities in non-EU cosmetic products entering the single market E-10-2026-000688Written questionwith 21 co-authors21 May 2026
18 Feb 2026Inspections to ensure regulatory conformity of cosmetic products in the single market with the Cosmetic Products Regulation E-10-2026-000687Written questionwith 22 co-authorsNot yet answered
9 Feb 2026MOTION FOR A RESOLUTION on World Cancer Day B-10-2026-0141Motion for a resolutionwith 18 co-authors—

Show all 23 questions and motions

Amendments tabled in committee, 13

Committee amendment documents that carry amendments by the member, with how many are theirs.

Date: of the amendment document. Text amended: the dossier and the document’s id. Committee: where the amendments were tabled. Amendments: how many in the document are the member’s.
DateText amendedCommitteeAmendments
23 Jun 2026on the proposal for a regulation of the European Parliament and of the Council establishing the European Fund for economic, social and territorial cohesion, agriculture and rural, fisheries and maritime, prosperity and security for the period 2028-2034 and amending Regulation (EU) 2023/955 and Regulation (EU, Euratom) 2024/2509 CJ71-AM-790099 CJ712
29 Apr 2026Institutional aspects of artificial intelligence in the context of European integration AFCO-AM-787899 AFCO2
17 Mar 2026Amending Decision (EU) 2015/1814 as regards the market stability reserve for the buildings, road transport and additional sector ENVI-AM-785330 ENVI7
12 Feb 2026Findings and recommendations of the Special Committee on the European Democracy Shield EUDS-AM-784433 EUDS4
12 Feb 2026Findings and recommendations of the Special Committee on the European Democracy Shield EUDS-AM-784407 EUDS2
12 Feb 2026Findings and recommendations of the Special Committee on the European Democracy Shield EUDS-AM-784408 EUDS7
12 Feb 2026Findings and recommendations of the Special Committee on the European Democracy Shield EUDS-AM-784367 EUDS1
12 Feb 2026Findings and recommendations of the Special Committee on the European Democracy Shield EUDS-AM-784405 EUDS7
12 Feb 2026Findings and recommendations of the Special Committee on the European Democracy Shield EUDS-AM-784406 EUDS3
30 Jan 2026Interim report on the proposal for the multiannual financial framework for 2028-2034 BUDG-AM-784187 BUDG3

Show all 13 amendment documents

Connections

Dossiers they lead or shadow, committees, party, delegation and other related pages.

Political group

National delegation

  • Delegation Poland National delegation

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). “Bartłomiej SIENKIEWICZ”. Member record. memberId 86057. EU Parl Watch Research. https://news.eu-parl.st-solutions.dev/members/86057?page=6&scope=all&vscope=final (retrieved 25 September 2026). Official source: Member’s profile, European Parliament, https://www.europarl.europa.eu/meps/en/86057. Data: EP Open Data: member record, https://data.europarl.europa.eu/api/v2/meps/86057?format=application%2Fld%2Bjson (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-member-86057,
  author = {{EU Parl Watch Research}},
  title = {{Bartłomiej SIENKIEWICZ}},
  year = {2026},
  howpublished = {\url{https://news.eu-parl.st-solutions.dev/members/86057?page=6&scope=all&vscope=final}},
  url = {https://news.eu-parl.st-solutions.dev/members/86057?page=6&scope=all&vscope=final},
  urldate = {2026-09-25},
  publisher = {EU Parl Watch Research},
  note = {Member record. memberId 86057. Official source: https://www.europarl.europa.eu/meps/en/86057. Data: EP Open Data: member record (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}
}