1948 Costa Rican general election

In 1944, four days after the elections were over while celebrating the triumph of Teodoro Picado, Calderón's candidacy was announced for the next elections.[4]

The main opposition parties; the Democratic Party, the National Union Party and the Social Democratic Party held a convention to choose a single candidate. The pre-candidates were Fernando Castro Cervantes (Democrat), Otilio Ulate Blanco (Unionist) and José Figueres Ferrer (Social-Democrat).[4] Figueres is eliminated in the first round and with his support Ulate wins in the second. Figueres is named chief of action and Mario Echandi is secretary general of the coalition. While Calderón was named candidate on March 23, 1947 at the Republican Convention.[4]

The National Electoral Tribunal is created for the first time in charge of supervising the elections, this so that it is not the government (as it was until then) that regulated them and thus appease the moods that accused the government of interfering in favor of the official candidate. Even so, the work of the TNE was limited.[4]

The situation is tremendously tense between government and opposition. The youth of the National Opposition Coalition violently confronts the Communist Brigades during the debate on the budgets of the electoral bodies in the Congress.[4]

The opposition insists that it will not repeal the social reforms, while the "caldero-communists" affirm that they must win once more to consolidate them permanently and that the opposition will abolish them after winning.[4]

The tension increases and even groups of the opposition become subversive. The Cartago Province, one of the strongholds of the opposition, begins a general strike and a series of social uprisings that force Picado to remove the governor (who was appointed by the president) and other local rulers, although this does not calm the spirits. In addition, the government faces a large national strike known as the "arms-down strike" and the clashes leave many dead.[4]

On February 28, 1948 the National Electoral Tribunal issued a ruling on the elections with two opinions, the majority signed by magistrates Gerardo Guzmán and José María Vargas, and the minority signed by magistrate Max Koberg. The majority found inconsistencies in the count and nullity of the padron: 14,000 votes exceeded the voters who had participated in theory and who gave the win to Ulate, inconsistency whereby the elections were canceled. The minority one does not. The Constitutional Congress heard both opinions generated an intense debate between the Calderonistas and communists deputies who advocated in favor of annulling the elections and the opposition deputies.

The Congress did not annul the parliamentary elections where the ruling coalition had been favored, even though the irregularities denounced in the presidential elections applied to both. In any case, this cancellation was the trigger for the Costa Rican Civil War or "48 War". After which the "Founding Junta of the Second Republic" presided over by Figueres would ruled de facto for 18 months, then giving the presidency to Otilio Ulate in 1949.[4]