In the 1990s, De Wolff served as a civic member of the
Democrats 66 political group on the Amsterdam-Zuid District Council and the Municipal Council of the City of
Amsterdam. From 1994 to 1998, De Wolff was a political counsel to the
Amsterdam Aldermen for Arts & Culture and Media. In 2004, Arjen de Wolff moved back to the Netherlands from
Curaçao to become secretary-general of the parliamentary group of
Democrats 66 in the Dutch House of Representatives. During these years,
Democrats 66 was a governing party and was faced with internal struggles over political direction and future leadership. De Wolff actively participated in a movement to establish
Democrats 66 as a mainstream party in the centre-left of Dutch politics, with an emphasis on social and economic issues rather than the more traditional constitutional reform related agenda of the party. Since the early 1990s, Arjen de Wolff has played an active role in trying to bridge the gap between centre-left parties of the Netherlands. He was a coordinator of Opschudding, a movement of dissent within
Democrats 66 that later merged with Niet Nix, a social liberal current within the
Dutch Labor Party (PvdA). De Wolff was a member of
Democrats 66 for over twenty years, holding several political offices for that party. He gave up his membership in 2008 and in 2010, he joined the
PvdA. In 2011, Arjen de Wolff was one of the founders of a new centrist political initiative called
Dag van 100, aiming to transcend the polarized political debate of the time and bring together thinkers and practitioners from both the centre-left and the centre-right of the Dutch political spectrum. According to Dutch daily newspaper
Het Parool, the initiative aimed to participate in the municipal elections. Dutch political weekly magazine
Elsevier highlighted the disappointment of the founders in the current political parties. ==International career in democracy, governance and media development==