| ADR | Alternative Democratic Reform Party | Luxembourg |
| AP | Labour Party | Norway |
| BDP | Conservativ Democratic Party | Switzerland |
| BE | Left Bloc | Portugal |
| C | Center Party | Sweden |
| CD&V | Christian Democratic and Flemish | Belgium |
| CDA | Christian Democratic Appeal | Netherlands |
| CDUG | Christian Democratic Union of Germany | Germany |
| CDUP | Democratic Unitarian Coalition | Portugal |
| CONS | Conservative Party | United Kingdom |
| CSU | Christian Social Union in Bavaria | Germany |
| CSV | Christian Social People's Party | Luxembourg |
| CVP | Christian Democratic People's Party | Switzerland |
| D66 | Democrats 66 | Netherlands |
| DF | Danish People's Party | Denmark |
| DP | Democratic Party | Luxembourg |
| EELV | Europe Ecology - The Greens | France |
| EL | Red-Green Alliance | Denmark |
| FDP | FDP. The Liberals | Switzerland |
| FF | Soldiers of Destiny | Ireland |
| FG | Family of the Irish | Ireland |
| FI | Forward Italy | Italy |
| FN | National Front | France |
| FP | Liberal People's Party | Sweden |
| FPO | Freedom Party of Austria | Austria |
| FrP | Progress Party | Norway |
| GLP | Green Liberal Party | Switzerland |
| GPS | Green Party | Switzerland |
| GRENG | The Greens | Luxembourg |
| Groen | Green | Belgium |
| GRUNE | The Austrian Green Party | Austria |
| Grunen | Alliance '90/The Greens | Germany |
| H | Conservative Party | Norway |
| KESK | Finish Center Party | Finland |
| KKE | Communist Party of Greece | Greece |
| KOK | National Coalition Party | Finland |
| KrF | Christian Democratic Party | Norway |
| LA | Liberal Alliance | Denmark |
| LABI | Labour | Ireland |
| LABUK | Labour Party | United Kingdom |
| LIBDEM | Liberal Democratic Party | United Kingdom |
| Linke | The Left | Germany |
| LSAP | Luxembourg Socialist Workers' Party | Luxembourg |
| M | Moderate Party | Sweden |
| M5S | Five Star Movement | Italy |
| MP | Environment Party - The Greens | Sweden |
| MR | Reformist Movement | Belgium |
| N-VA | New Flemish Alliance | Belgium |
| ND | New Democracy | Greece |
| OVP | Austrian People's Party | Austria |
| PD | Democratic Party | Italy |
| Potami | The River | Greece |
| PPP | People's Party | Portugal |
| PPS | People's Party | Spain |
| PSB | Socialist Party | Belgium |
| PSD | Social Democratic Party | Portugal |
| PSF | Socialist Party | France |
| PSOE | Spanish Socialist Workers' Party | Spain |
| PSP | Socialist Party | Portugal |
| PvdA | Labour Party | Netherlands |
| PVV | Party for Freedom | Netherlands |
| SAP | Swedish Social Democratic Party | Sweden |
| SC | Civic Choice | Italy |
| SDD | Social Democrats | Denmark |
| SDP | Social Democratic Party of Finland | Finland |
| SDS | Sweden Democrats | Sweden |
| SF | We Ourselves | Ireland |
| SPA | Socialist Party Different | Belgium |
| SPD | Social Democratic Party of Germany | Germany |
| SPN | Centre Party | Norway |
| SPNL | Socialist Party | Netherlands |
| SPO | Social Democratic Party of Austria | Austria |
| SPS | Social Democratic Party of Switzerland | Switzerland |
| SVP | Swiss People's Party | Switzerland |
| SYRIZA | Coalition of the Radical Left | Greece |
| TeamStronach | Team Stronach for Austria | Austria |
| TF | True Finns | Finland |
| UKIP | United Kingdom Independence Party | United Kingdom |
| UMP | Union for Popular Movement | France |
| VAS | Left Alliance | Finland |
| VD | Venstre, Liberal Party of Denmark | Denmark |
| VIHR | Green League | Finland |
| VLD | Open Flemish Liberals and Democrats | Belgium |
| VN | Liberal Party | Norway |
| VS | Left Party | Sweden |
| VVD | People's Party for Freedom and Democracy | Netherlands |
| XA | Popular Association - Golden Dawn | Greece |
