Dané kapilih dados anggota Parlemen Yunani mawit saking warsa 2009, raris dados calon Présidén Komisi Éropa saking Partai Kiri Éropa ring pemilu Parlemén Éropa warsa 2014.
He is also Vice President of the Party of the European Left and was its nominee for President of the European Commission in the 2014 European Parliament election.