The Estonian Blue Party (Eesti Sinine Erakond, ESE) was founded on 29 November 1994 in Tallinn, Estonia.
[2] On 21 July 2005, it announced it would cooperate with the Pro Patria Union in local elections.
[2] At the beginning of 2006, there were plans to merge EDP with Eesti Iseseisvuspartei (EIP) and Põllumeeste Kogu (Farmers' Council, PK), but this did not happen.
[2] On 18 March 2006, the party congress voted to join the Pro Patria Union, but this did not happen.
[2] On 2 April 2009, party chairman Jaan Laas announced that, after candidate approval by the party's executive board, elections would be held on 23 April 2009[1] for candidates wishing to stand for Libertas Estonia in the 2009 Estonian Euroelections in June.