| Abbr. | Logo | Ideology | Founded | Founder | Leader | Website | European Parliament Group |
| S |  | Democratic socialism, Feminism, Pro-Europeanism | 05.05.2000 | | Kristrún Frostadóttir | http://samfylkingin.is | |
Elections
| Elections | % | Votes | Seats | |
| 2021 | 9,93 | 19.825 | 6 | 4th |
| 2017 | 12,05 | 23.652 | 7 | 4th |
| 2016 | 5,74 | 10.893 | 3 | 7th |
| 2013 | 12,85 | 24.292 | 9 | 3rd |
| 2009 | 29,79 | 55.758 | 20 | 1st |
| 2007 | 26,76 | 48.743 | 18 | 2nd |
| 2003 | 30,95 | 56.700 | 20 | 2nd |
Party History
Merger of National Awakening, People’s Alliance, Social Democratic Party and Women’s List.
| Leaders |
| 1999 – 2000 | Margrét Frímannsdóttir |
| 2000 – 2005 | Össur Skarphéðinsson |
| 2005 – 2009 | Ingibjörg Sólrún Gísladóttir |
| 2009 – 2013 | Jóhanna Sigurðardóttir |
| 2013 – 2016 | Árni Páll Árnason |
| 2016 – 2016 | Oddný Guðbjörg Harðardóttir |
| 2016 – 2022 | Logi Már Einarsson |
| 2022 | Kristrún Frostadóttir |
