| Abbr. | Logo | Ideology | Founded | Founder | Leader | Website | European Parliament Group |
| SF |  | Democratic socialism, green politics | 15.02.1959 | Aksel Larsen | Pia Olsen Dyhr | sf.dk |  |
Elections
| Date | Elections | % | Votes | Seats | |
| 2022 | 8,30 | 293.186 | 15 | 4th | |
| 2019 | 7,71 | 272.304 | 14 | 5th | |
| 2019 | EU | 13,23 | 364.895 | 2 | 3rd |
| 2015 | 4,21 | 148.027 | 7 | 8th | |
| 2014 | EU | 10,95 | 249.305 | 1 | 4th |
| 2011 | 9,29 | 326.192 | 16 | 5th | |
| 2009 | EU | 15,87 | 371.603 | 2 | 3rd |
| 2007 | 13,04 | 450.975 | 23 | 4th | |
| 2005 | 5,89 | 201.047 | 11 | 6th | |
| 2004 | EU | 7,96 | 150.766 | 1 | 5th |
| 2001 | 6,37 | 219.842 | 12 | 5th |
| Leaders | |
| 1959 – 1968 | Aksel Larsen |
| 1968 – 1974 | Sigurd Ømann |
| 1974 – 1991 | Gert Petersen |
| 1991 – 2005 | Holger K. Nielsen |
| 2005 – 2012 | Villy Søvndal |
| 2012 – 2014 | Annette Vilhelmsen |
| 2014 – | Pia Olsen Dyhr |
