Alberto Fernández takes the oath of office as President of Argentina while Cristina Fernández de Kirchner is sworn in as Vice President.
President Alberto Fernández reshuffles his cabinet, as demanded by Vice President Cristina Fernández de Kirchner, following the poor turnout of their Peronist and Kirchnerist Frente de Todos coalition in the legislative primary election. Among the appointed ministers include Santiago Cafiero, Julián Domínguez, Aníbal Fernández, and Daniel Filmus.
Opposition lawmakers in Argentina present a formal impeachment against President Alberto Fernández for violating COVID-19 restrictions after a photo surfaced of a party that he held in 2020 while the country was under a strict quarantine. Opposition party leader Patricia Bullrich called for Fernández's removal as mid-term elections approach.
Argentinian voters go to the polls to elect a new president. Though the margin is lower than what opinion polls predicted, Alberto Fernández of the left-wing Justicialist Party beats incumbent Mauricio Macri of the center-right Republican Proposal. Macri becomes the first president in Argentinian history to lose his reelection bid.
Former Argentine President Cristina Fernández de Kirchner announces that she will run for Vice President in the 2019 Argentine general election, with former Chief of Staff Alberto Fernández as her running mate for President.
The government of Argentina announces that President Cristina Fernández de Kirchner has cancer in her thyroid gland, and will have an operation on 4 January and step aside as president for 20 days until 24 January.
Néstor Kirchner, Secretary General of UNASUR, former President of Argentina and husband of President Cristina Fernández de Kirchner dies at his home in El Calafate, Santa Cruz Province, with three days of mourning declared.