Shortly after the election, the coalition dissolved, as the PSC–R joined the Catalan Federation of the PSOE and the Socialist Party of Catalonia–Congress to form the Socialists' Party of Catalonia (PSC), while CDC (into which EDC was merged in 1978) joined with Democratic Union of Catalonia (UDC) to form Convergence and Union (CiU).

[6][7][8] EDC disengaged from the platform in December 1976 and reached an electoral alliance with Jordi Pujol's CDC instead,[9][10][11] whereas the Left Front was joined by the National Front of Catalonia (FNC) and Catalan State (EC) and formally constituted as an electoral coalition on 11 March 1977.

[14] Throughout the subsequent weeks, contacts would be maintained with other parties for a possible expansion of the Front to the entire Catalan democratic and socialist left—and into a "Socialist and Democratic Bloc of Catalonia" (Catalan: Bloc Socialista y Democrátic de Catalunya)—but this came at the risk of compromising the Front's internal cohesion.

[17][18] While UDC was favourable to entering a coalition with CDC, it did not want to foregone its agreement with the Catalan Centre, the Union of the Centre and Christian Democracy of Catalonia (UDCC), and saw the proposal as absent of a larger degree of programmatic concretion;[19] EDC fully supported Pujol's proposal, whereas ERC and the PSC–R were initially only willing to consider alliances within the umbrella of their Left Front,[20][21] as long as they respected their "Catalan Solidarity" proposal of post-election joint political action.

[22][23] By late April, chances of UDC joining the CDC–EDC "Democratic Front" vanished after the former stuck to its UDCC alliance with the Catalan Centre,[24] but negotiations continued between Pujol's alliance and the parties comprising the Left Front,[25][26] resulting in the breakup of the latter and in the PSC–C and the FNC joining the CDC–EDC's coalition, rebranded as the "Democratic Pact for Catalonia", for the Congress of Deputies election.