On 7 February 1990, the New Forum, Democracy Now and the Initiative for Peace and Human Rights agreed upon the creation of the strategic partnership Alliance 90 ("Bündnis 90") for the 1990 East German general election.

On 18 March 1990, in the next and final free election of the former East Germany, the Alliance 90 received 2.9% of the vote, thus securing 12 seats.

In the 1990 federal election held on 2 December 1990, the first election following the reunification of Germany, 6.1% of voters in the Eastern electoral area (1.2% across Germany) cast their Zweitstimme (the vote for a party, as opposed to for a person) for the group "Alliance 90/Greens – Citizens' Movement" (Bündnis 90/Grüne – BürgerInnenbewegung), which entered into the German Bundestag with eight East German elected members: Klaus-Dieter Feige, Ingrid Köppe, Gerd Poppe, Christina Schenk, Werner Schulz, Wolfgang Ullmann, Konrad Weiß and Vera Wollenberger.

On 21 September 1991, the party Alliance 90 was founded, which brought together parts of the New Forum, Democracy Now and the Initiative for Peace and Human Rights.

However, they were unsuccessful in their case and founded the Citizens' Alliance ("Bürger Bündnis"), headed by Günter Nooke, Matthias Platzeck und Wolfgang Pohl.