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Member

Bartłomiej SIENKIEWICZ

EPP · Poland

Group
EPP PPE
Country
Poland
Roll-call participation
97.3 %ⓘ of 620 roll calls in office · chamber median 90.6 % · whole term, final votes
With majority line
94.2 %ⓘ of 603 votes where the group had a line · EPP median 95.6 %
More facts (5)
National party
KO Koalicja Obywatelska
In office
Since 16 Jul 2024
Against clear line
20 of 561 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 ⓘ

97.3 %

603 of 620 final votes while in office

EPP median: 90.6 % (+6.7 pts)

Chamber median: 90.6 %

With majority line ⓘ

94.2 %

568 of 603 votes where their group had a line

EPP median: 95.6 % (−1.4 pts)

Against clear line ⓘ

3.6 %

20 of 561 votes where their group had a clear line

13 opposite (for ↔ against), 7 abstained against the line

Abstention ⓘ

2.5 %

15 of 603 votes cast

Participation 97.3 % — EPP median 90.6 %, 192 members.ⓘ
Data as a table
Participation among the 192 members of the EPP with enough votes.
FigureParticipation
Bartłomiej SIENKIEWICZ97.3 %
EPP median90.6 %
Lowest in the group18.4 %
Highest in the group99.8 %
Members192
With majority line 94.2 % — EPP median 95.6 %, 192 members.ⓘ
Data as a table
With majority line among the 192 members of the EPP with enough votes.
FigureWith majority line
Bartłomiej SIENKIEWICZ94.2 %
EPP median95.6 %
Lowest in the group67.8 %
Highest in the group99.0 %
Members192
  • Whole term, 620 final votes; 620 of 794 decisions had a final vote recorded by name. 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, 5 928

Export

Every 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.
DateDecision and voteResultPositionMajority line
9 Jul 2026Temporary derogation from the ePrivacy directive Amendment 24, adding text after recital 13 162 for, 424 against, 18 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Amendment 3 to recital 11 257 for, 292 against, 59 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Amendment 23, adding text after recital 8 170 for, 412 against, 19 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Amendment 22, adding text after recital 5 164 for, 425 against, 14 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Amendment 29 to Article 11 353 for, 254 against, 7 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Amendment 28, adding text after Article 3 175 for, 399 against, 23 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Amendment 20 to Article 3, paragraph 1, point j 142 for, 434 against, 30 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Amendment 19 to Article 3, paragraph 1, point g, point vii 110 for, 432 against, 62 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Amendment 18 to Article 3, paragraph 1, point g, point iii 119 for, 436 against, 51 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Amendment 17 to Article 3, paragraph 1, point d 86 for, 479 against, 41 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Amendment 16 to Article 3, paragraph 1, point b 154 for, 421 against, 19 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Amendment 27 to Article 3, paragraph 1, after point a 175 for, 408 against, 22 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Amendment 5 to Article 3, paragraph 1, point a, after point 1 322 for, 255 against, 36 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Amendments 26 + 31 + 6 + 21 (voted as one) to Article 3, paragraph 1, point a — part 3 362 for, 235 against, 5 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Amendments 26 + 31 + 4 (voted as one) to Article 3, paragraph 1, point a — part 2 346 for, 254 against, 3 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Amendment 15 to Article 3, paragraph 1, point a 161 for, 430 against, 10 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Amendment 14 to Article 3, paragraph 1, point a 160 for, 433 against, 11 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Amendments 26 + 31 + 4 (voted as one) to Article 3, paragraph 1, point a — part 1 345 for, 237 against, 18 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Amendment 13 to Article 3, paragraph 1, point a 119 for, 434 against, 51 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Amendment 12 to Article 2, after point 4 158 for, 433 against, 11 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Amendment 11 to Article 2, after point 4 120 for, 433 against, 52 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Amendment 10 to Article 2, after point 4 161 for, 433 against, 12 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Amendment 30 to Article 1, after paragraph 2 369 for, 236 against, 6 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Amendment 9 to Article 1, paragraph 2 114 for, 422 against, 60 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Amendment 8 to Article 1, paragraph 1 117 for, 422 against, 66 abstainedPosition: Against Majority line: Against
9 Jul 2026Temporary derogation from the ePrivacy directive Proposal to reject the text 314 for, 276 against, 17 abstainedPosition: Against Majority line: Against
9 Jul 2026Establishment of the digital euro Decision to open negotiations with the CouncilNegotiating mandate approved 416 for, 169 against, 22 abstainedPosition: Against ≠ groupMajority line: For
8 Jul 2026Genetically modified maize DP202216 x NK603 x DAS-40278-9 and its sub-combinations DP 202216 x NK603, DP202216 x DAS-40278-9 Final vote — text as a wholeObjection passed 417 for, 167 against, 15 abstainedPosition: Against Majority line: Against
8 Jul 2026The impact of the 1974 Turkish invasion on Cypriot women and girls, and the crimes committed by Turkish forces and consequences on gender equality Final vote — text as a wholeAdopted 575 for, 33 against, 43 abstainedPosition: For Majority line: For
8 Jul 2026Genetically modified maize NK603 × T25 Final vote — text as a wholeObjection passed 460 for, 189 against, 14 abstainedPosition: Against Majority line: Against
8 Jul 2026Genetically modified soybean MON 87705 Final vote — text as a wholeObjection passed 466 for, 175 against, 16 abstainedPosition: Against Majority line: Against
8 Jul 2026The impact of the 1974 Turkish invasion on Cypriot women and girls, and the crimes committed by Turkish forces and consequences on gender equality Separate vote on recital J 337 for, 273 against, 46 abstainedPosition: For Majority line: For
8 Jul 2026The impact of the 1974 Turkish invasion on Cypriot women and girls, and the crimes committed by Turkish forces and consequences on gender equality Amendment 6 to recital J 292 for, 348 against, 10 abstainedPosition: Against Majority line: Against
8 Jul 2026The impact of the 1974 Turkish invasion on Cypriot women and girls, and the crimes committed by Turkish forces and consequences on gender equality Amendment 5, adding text after recital I 274 for, 323 against, 51 abstainedPosition: Against Majority line: Against
8 Jul 2026The impact of the 1974 Turkish invasion on Cypriot women and girls, and the crimes committed by Turkish forces and consequences on gender equality Amendment 4, adding text after recital I 383 for, 239 against, 34 abstainedPosition: Against Majority line: Against
8 Jul 2026The impact of the 1974 Turkish invasion on Cypriot women and girls, and the crimes committed by Turkish forces and consequences on gender equality Amendment 2, adding text after recital C 374 for, 233 against, 45 abstainedPosition: Against Majority line: Against
8 Jul 2026The impact of the 1974 Turkish invasion on Cypriot women and girls, and the crimes committed by Turkish forces and consequences on gender equality Separate vote on recital B 625 for, 7 against, 25 abstainedPosition: For Majority line: For
8 Jul 2026The impact of the 1974 Turkish invasion on Cypriot women and girls, and the crimes committed by Turkish forces and consequences on gender equality Amendment 16, adding text after paragraph 22 196 for, 423 against, 17 abstainedPosition: Against Majority line: Against
8 Jul 2026The impact of the 1974 Turkish invasion on Cypriot women and girls, and the crimes committed by Turkish forces and consequences on gender equality Amendment 14, adding text after paragraph 19 358 for, 166 against, 122 abstainedPosition: For Majority line: For
8 Jul 2026The impact of the 1974 Turkish invasion on Cypriot women and girls, and the crimes committed by Turkish forces and consequences on gender equality Amendment 13, adding text after paragraph 14 348 for, 282 against, 26 abstainedPosition: For Majority line: For
8 Jul 2026The impact of the 1974 Turkish invasion on Cypriot women and girls, and the crimes committed by Turkish forces and consequences on gender equality Amendment 12, adding text after paragraph 9 489 for, 142 against, 14 abstainedPosition: For Majority line: For
8 Jul 2026The impact of the 1974 Turkish invasion on Cypriot women and girls, and the crimes committed by Turkish forces and consequences on gender equality Amendments 1 + 11 (voted as one) to paragraph 9 — part 3 488 for, 68 against, 68 abstainedPosition: For Majority line: For
8 Jul 2026The impact of the 1974 Turkish invasion on Cypriot women and girls, and the crimes committed by Turkish forces and consequences on gender equality Amendments 1 + 11 (voted as one) to paragraph 9 — part 2 484 for, 78 against, 61 abstainedPosition: Against ≠ groupMajority line: For
8 Jul 2026The impact of the 1974 Turkish invasion on Cypriot women and girls, and the crimes committed by Turkish forces and consequences on gender equality Amendments 1 + 11 (voted as one) to paragraph 9 — part 1 453 for, 141 against, 45 abstainedPosition: Against Majority line: Against
8 Jul 2026The impact of the 1974 Turkish invasion on Cypriot women and girls, and the crimes committed by Turkish forces and consequences on gender equality Amendment 9, adding text after paragraph 5 234 for, 367 against, 51 abstainedPosition: Against Majority line: Against
8 Jul 2026The impact of the 1974 Turkish invasion on Cypriot women and girls, and the crimes committed by Turkish forces and consequences on gender equality Separate vote on paragraph 5 615 for, 33 against, 3 abstainedPosition: For Majority line: For
8 Jul 2026The impact of the 1974 Turkish invasion on Cypriot women and girls, and the crimes committed by Turkish forces and consequences on gender equality Amendment 8, adding text after paragraph 2 243 for, 384 against, 27 abstainedPosition: Against Majority line: Against
8 Jul 2026The impact of the 1974 Turkish invasion on Cypriot women and girls, and the crimes committed by Turkish forces and consequences on gender equality Paragraph 2 — part 2 567 for, 41 against, 50 abstainedPosition: For Majority line: For
8 Jul 2026The impact of the 1974 Turkish invasion on Cypriot women and girls, and the crimes committed by Turkish forces and consequences on gender equality Paragraph 2 — part 1 628 for, 18 against, 11 abstainedPosition: For Majority line: For
8 Jul 2026The impact of the 1974 Turkish invasion on Cypriot women and girls, and the crimes committed by Turkish forces and consequences on gender equality Amendment 15, adding text after paragraph 1 194 for, 445 against, 7 abstainedPosition: Against Majority line: Against

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 2 of 80 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

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=9&scope=final&vscope=all (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=9&scope=final&vscope=all}},
  url = {https://news.eu-parl.st-solutions.dev/members/86057?page=9&scope=final&vscope=all},
  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}
}