[2] The Peronist, left-wing Frente de Todos ticket of Alberto Fernández, former Chief Cabinet, and Cristina Fernández de Kirchner, National Senator and former president, defeated the center-right Juntos por el Cambio ticket of incumbent president Mauricio Macri and conservative Peronist National Senator Miguel Ángel Pichetto, exceeding the threshold to win the presidency in a single round.

Macri became the first incumbent president in Argentine history to be defeated in his reelection bid.

[7] The third senatorial seat was established in the Constitution of 1994 in order to better represent the largest minority in each district.

The 257 members of the Chamber of Deputies are elected by proportional representation in 24 multi-member constituencies based on the provinces (plus the City of Buenos Aires).

The 2019 elections will see one-third of senators renewed, with eight provinces electing three senators for a 6-year term; Buenos Aires City, Chaco, Entre Ríos, Neuquén, Río Negro, Salta, Santiago del Estero and Tierra del Fuego.

[citation needed] The following candidates successfully registered their nominations before the limit date of 22 June 2019, and went on to compete in the Open, Simultaneous and Mandatory Primaries (PASO) on 11 August 2019.

Lavagna, del Caño, Gómez Centurión and Espert all received enough valid votes to participate in the general election.