[1] Staging its first coup since 1861, the Argentine military, then dominated by conservative, rural interests, called on José Félix Uriburu, a retired general and member of the Supreme War Council, to assume the role of Provisional President.

The scion of one of Argentina's traditional landed families and President from 1922 to 1928, Alvear's alliance with Yrigoyen soured as he challenged the latter's personality cult (hence his creation of a splinter, "Antipersonalist" UCR).

[3] Facing a recovered and nearly-unified UCR, President Uriburu dispensed with his previous pledge to restore constitutional order and annulled the Buenos Aires Province elections.

[2] The support of UCR Senator Leopoldo Melo (the leader of the anti-Yrigoyen faction of the party) and Uriburu for retired General Agustín Justo as candidate resulted in the Concordance.

The electoral college, however, which counted the conservatives' ad hoc Lista Única (Unified List) separately, was far more closely divided: 135 for Justo, 124 for de la Torre, and 117 for the numerous UCR tickets who defied Alvear's boycott (including Barroetaveña's).