The party was launched in November 2013 by splinters from Civic Choice (SC) led by Mario Mauro and Lorenzo Dellai, who wanted to continue supporting Enrico Letta's government (in which Mauro served as minister of Defence), but disagreed with SC's perceived liberal outlook.

In July 2014, the PpI suffered the defection of its left-wing faction (composed by the majority of the party's MPs: eight deputies out of twelve and two senators out of eight), led by Dellai, Olivero, Mario Marazziti, Mario Giro and Lucio Romano, who launched Solidary Democracy (Demo.S).

Eventually, after the 2015 regional elections, which the party contested with its own list only in Apulia (obtaining a mere 0.4% of the vote),[19] the PpI decided to end their support to the Renzi Cabinet.

As a consequence, three MPs left the party: Rossi and D'Onghia in order to continue to be part of the government, and Tito Di Maggio to join the Conservatives and Reformists, a group of splinters from the new Forza Italia, led by Raffaele Fitto.

In March 2017, the PpI made an alliance agreement with Forza Italia, therefore Mauro joined that party's group in the Senate.