An internal vote was planned to decide between Gabriel González Videla and Arturo Olavarría, who had the support of the Duhaldista faction.

[4] The final results of the Radical Party's internal plebiscite were as follows:[5] The Democratic Alliance, the successor of the Popular Front, held a convention on 20 July.

[8] During a plenary session on 18 August, the Socialist Party officially announced the presidential candidacy of labor leader Bernardo Ibáñez.

The voting results from each day of the Convention were as follows:[11][12] Numerous efforts to reach an agreement on a single candidate were unsuccessful, leading to the emergence of two main contenders: Eduardo Cruz-Coke, backed by conservatives, and Arturo Alessandri, supported by liberals and labor agrarians.

[14] Two days later, on 13 August, Alfredo Duhalde resigned from his candidacy, reclaiming the vice presidency of the Republic that he had left earlier in the month to pursue his political campaign.

González Videla accused Eduardo Cruz-Coke of engaging in these maneuvers, which he claimed were aimed at disregarding the triumph of the left-wing candidacy, while simultaneously campaigning to secure the necessary support from different political groups in the Full Congress.

Subsequently, the National Falange joined the coalition, followed immediately by the agrarian and socialist parties, including both Grove and Bernardo Ibáñez factions.