Created by Christian Troadec in the 2010 regional elections under the slogan, "We'll make Brittany again" where the party got 4.29% of the vote.
[2] In the 2011 senatorial elections, the MBP participated in a union with other left wing parties and nominated Hélène Le Ny to contest the senatorial seat in Morbihan held by Joël Labbé, an EELV senator.
He got a result that guaranteed him a place in the second round but withdrew due to fear of vote splitting.
[5] This result came despite the presence of an alliance led by the Breton Democratic Union as well as the Breizhistance with help from the NPA.
In 2016, both the Breton Democratic Union and Brittany Movement and Progress declared their intention to renew the alliance for the legislative and presidential elections in 2017.