Editing Party of European Socialists (section)

===Full members===
{| class="wikitable sortable"
! State !! Name !! abbr. !! [[Member of the European Parliament|MEPs]]{{efn|The number of MEPs listed below may not match the total number of MEPs of the European party, as it does not include MEPs who join as individual members.}} !! National MPs
|-
|{{AUT}}
|[[Social Democratic Party of Austria]]<br>{{lang|de|Sozialdemokratische Partei Österreichs}}
|SPÖ
|align="left"|{{Composition bar|5|19|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|40|183|hex=#{{wikidata|property|P465}}}}{{Composition bar|19|62|hex=#{{wikidata|property|P465}}}}
|-
|rowspan=2|{{flagcountry|Belgium}}
|[[Parti Socialiste (Belgium)|Socialist Party]]<br>{{lang|fr|Parti socialiste}}
|PS
|align="left"|{{Composition bar|2|8|hex=#{{wikidata|property|P465}}}}<ref name="psbel" group="."/>
|align="left"|{{Composition bar|19|63|hex=#{{wikidata|property|P465}}}}{{Composition bar|7|24|hex=#{{wikidata|property|P465}}}}<ref name="psbel" group=".">French-speaking seats</ref>
|-
|[[Forward (Belgium)|Forward]]<br>{{lang|nd|Vooruit}}
|Vooruit
|align="left"|{{Composition bar|1|13|hex=#{{wikidata|property|P465}}}}<ref name="sp.a" group=".">Flemish seats</ref>
|align="left"|{{Composition bar|9|87|hex=#{{wikidata|property|P465}}}}{{Composition bar|4|35|hex=#{{wikidata|property|P465}}}}<ref name="sp.a" group="."/>
|-
|{{BGR}}
|[[Bulgarian Socialist Party]]<br>{{lang|bg|Българска социалистическа партия}}<br>{{lang|bg|Bulgarska sotsialisticheska partiya}}
|BSP
|align="left"|{{Composition bar|2|17|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|18|240|hex=#{{wikidata|property|P465}}}}
|-
|{{CRO}}
|[[Social Democratic Party of Croatia]]<br>{{lang|hr|Socijaldemokratska partija Hrvatske}}
|SDP
|align="left"|{{Composition bar|4|12|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|37|151|hex=#{{wikidata|property|P465}}}}
|-
|{{CYP}}
|[[Movement for Social Democracy]]<br>{{lang|el|Κίνημα Σοσιαλδημοκρατών}}<br>{{lang|el|Kinima Sosialdimokraton}}
|EDEK
|align="left"|{{Composition bar|1|6|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|4|56|hex=#{{wikidata|property|P465}}}}
|-
|{{CZE}}
|[[Social Democracy (Czech Republic)|Social Democracy]]<br>{{lang|cs|Sociální demokracie}}
|SOCDEM
|align="left"|{{Composition bar|0|21|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|0|200|hex=#{{wikidata|property|P465}}}}{{Composition bar|1|81|hex=#{{wikidata|property|P465}}}}
|-
|{{DNK}}
|[[Social Democrats (Denmark)|Social Democrats]]<br>{{lang|da|Socialdemokraterne}}
|A
|align="left"|{{Composition bar|3|14|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|49|179|hex=#{{wikidata|property|P465}}}}
|-
|{{EST}}
|[[Social Democratic Party (Estonia)|Social Democratic Party]]<br>{{lang|et|Sotsiaaldemokraatlik Erakond}}
|SDE
|align="left"|{{Composition bar|2|7|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|9|101|hex=#{{wikidata|property|P465}}}}
|-
|{{FIN}}
|[[Social Democratic Party of Finland]]<br>{{lang|fi|Suomen sosialidemokraattinen puolue}}<br>{{lang|sv|Finlands socialdemokratiska parti}}
|SDP
|align="left"|{{Composition bar|2|14|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|43|200|hex=#{{wikidata|property|P465}}}}
|-
|{{FRA}}
|[[Socialist Party (France)|Socialist Party]]<br>{{lang|fr|Parti socialiste}}
|PS
|align="left"|{{Composition bar|3|79|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|65|348|hex=#{{wikidata|property|P465}}}}{{Composition bar|28|577|hex=#{{wikidata|property|P465}}}}
|-
|{{DEU}}
|[[Social Democratic Party of Germany]]<br>{{lang|de|Sozialdemokratische Partei Deutschlands}}
|SPD
|align="left"|{{Composition bar|16|96|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|120|630|#{{wikidata|property|P465}}}} <small>(Bundestag)</small> {{Composition bar|19|69|#{{wikidata|property|P465}}}} <small>(Bundesrat)</small>
|-
|{{GRC}}
|[[PASOK – Movement for Change]]<br>{{lang|el|Πανελλήνιο Σοσιαλιστικό Κίνημα – Κίνημα Αλλαγής
}}<br>{{lang|el|Panellínio Sosialistikó Kínima– Kínima Allagís}}
|PASOK-KINAL
|align="left"|{{Composition bar|2|21|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|23|300|#{{wikidata|property|P465}}}}
|-
|rowspan=2|{{HUN}} || [[Democratic Coalition (Hungary)|Democratic Coalition]]<br>{{lang|hu|Demokratikus Koalíció}} || DK || align="left"|{{Composition bar|2|21|hex=#{{wikidata|property|P465}}}}|| align="left"|{{Composition bar|16|199|#{{wikidata|property|P465}}}}
|-
|[[Hungarian Socialist Party]]<br>{{lang|hu|Magyar Szocialista Párt}}
|MSZP
|align="left"|{{Composition bar|0|21|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|10|199|#{{wikidata|property|P465}}}}
|-
|{{IRL}}
|[[Labour Party (Ireland)|Labour Party]]<br>{{lang|ga|Páirtí an Lucht Oibre}}
|Lab
|align="left"|{{Composition bar|1|14|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|4|60|#{{wikidata|property|P465}}}}{{Composition bar|7|160|#{{wikidata|property|P465}}}}
|-
|rowspan=2|{{ITA}}
|[[Democratic Party (Italy)|Democratic Party]]<br>{{lang|it|Partito Democratico}}
|PD
|align="left"|{{Composition bar|21|76|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|39|200|#{{wikidata|property|P465}}}}{{Composition bar|71|400|#{{wikidata|property|P465}}}}
|-
|[[Italian Socialist Party (2007)|Italian Socialist Party]]<br>{{lang|it|Partito Socialista Italiano}}
|PSI
|align="left"|{{Composition bar|0|76|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|0|200|#{{wikidata|property|P465}}}}{{Composition bar|0|400|#{{wikidata|property|P465}}}}
|-
|{{LVA}}
|[[Social Democratic Party "Harmony"]]<ref>{{Cite news|url=https://eng.lsm.lv/article/politics/politics/saskana-joins-party-of-european-socialists.a258851/|title=Saskaņa joins Party of European Socialists|date=27 November 2017|publisher=[[Public Broadcasting of Latvia]]|agency=[[LETA]]|access-date=22 September 2018}}</ref><br>{{lang|lv|Sociāldemokrātiskā partija "Saskaņa"}}
|SDPS
|align="left"|{{Composition bar|1|8|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|0|100|#{{wikidata|property|P465}}}}
|-
|{{LTU}}
|[[Social Democratic Party of Lithuania]]<br>{{lang|lt|Lietuvos socialdemokratų partija}}
|LSDP
|align="left"|{{Composition bar|2|11|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|52|141|#{{wikidata|property|P465}}}}
|-
|{{LUX}}
|[[Luxembourg Socialist Workers' Party]]<br>{{lang|lb|Lëtzebuerger Sozialistesch Aarbechterpartei}}<br>{{lang|fr|Parti ouvrier socialiste luxembourgeois}}<br>{{lang|de|Luxemburger Sozialistische Arbeiterpartei}}
|LSAP
|align="left"|{{Composition bar|1|6|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|10|60|#{{wikidata|property|P465}}}}
|-
|{{MLT}}
|[[Labour Party (Malta)|Labour Party]]<br>{{lang|mt|Partit Laburista}}
|PL
|align="left"|{{Composition bar|4|6|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|38|69|#{{wikidata|property|P465}}}}
|-
|{{NLD}}
|[[Labour Party (Netherlands)|Labour Party]]<br>{{lang|nl|Partij van de Arbeid}}
|PvdA
|align="left"|{{Composition bar|6|29|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|6|75|#{{wikidata|property|P465}}}}{{Composition bar|9|150|#{{wikidata|property|P465}}}}
|-
|{{NOR}}
|[[Labour Party (Norway)|Labour Party]]<br>{{lang|no|Arbeiderpartiet}}
|AP
|align="left"|''Not in EU''
|align="left"|{{Composition bar|48|169|#{{wikidata|property|P465}}}}
|-
|{{POL}}
|[[New Left (Poland)|New Left]]<br>{{lang|pl|Nowa Lewica}}
|NL
|align="left"|{{Composition bar|5|52|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|9|100|#{{wikidata|property|P465}}}}{{Composition bar|26|460|#{{wikidata|property|P465}}}}
|-
|{{PRT}}
|[[Socialist Party (Portugal)|Socialist Party]]<br>{{lang|pt|Partido Socialista}}
|PS
|align="left"|{{Composition bar|9|21|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|78|230|#{{wikidata|property|P465}}}}
|-
|{{ROU}}
|[[Social Democratic Party (Romania)|Social Democratic Party]]<br>{{lang|ro|Partidul Social Democrat}}
|PSD
|align="left"|{{Composition bar|8|33|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|47|136|#{{wikidata|property|P465}}}}{{Composition bar|109|330|#{{wikidata|property|P465}}}}
|-
|{{SVK}}
|{{no|[[Direction – Social Democracy]]<br>(suspended)<br>{{lang|sk|Smer – sociálna demokracia}}}}
|SMER-SD
|align="left"|{{Composition bar|5|15|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|42|150|#{{wikidata|property|P465}}}}
|-
|{{SVN}}
|[[Social Democrats (Slovenia)|Social Democrats]]<br>{{lang|sl|Socialni demokrati}}
|SD
|align="left"|{{Composition bar|2|8|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|7|90|#{{wikidata|property|P465}}}}
|-
|{{ESP}}
|[[Spanish Socialist Workers' Party]]<br>{{lang|es|Partido Socialista Obrero Español}}
|PSOE
|align="left"|{{Composition bar|21|58|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|89|265|#{{wikidata|property|P465}}}}{{Composition bar|121|350|#{{wikidata|property|P465}}}}
|-
|{{SWE}}
|[[Swedish Social Democratic Party]]<br>{{lang|sv|Sveriges socialdemokratiska arbetareparti}}
|SAP
|align="left"|{{Composition bar|5|21|hex=#{{wikidata|property|P465}}}}
|align="left"|{{Composition bar|107|349|#{{wikidata|property|P465}}}}
|-
|rowspan=2|{{GBR}}
|[[Labour Party (UK)|Labour Party]]
|Labour
|align="left"|''Not in EU''
|align="left"|{{Composition bar|213|830|#{{wikidata|property|P465}}}}{{Composition bar|404|632|#{{wikidata|property|P465}}}}
|-
|[[Social Democratic and Labour Party]]<br>{{lang|ga|Páirtí Sóisialta Daonlathach an Lucht Oibre}}
|SDLP
|align="left"|''Not in EU''
|align="left"|{{Composition bar|0|794}}{{Composition bar|2|18|#{{wikidata|property|P465}}}}
|}