Incumbent president Cristina Fernández de Kirchner of the Front for Victory won in a landslide, with 54% of the vote, securing a second term in office.

[5] The Front for Victory (FPV) candidate for the Justicialist Party primaries was current President Cristina Fernández de Kirchner.

[6] She had suffered a significant decline in approval during the 2008 Argentine government conflict with the agricultural sector and the subsequent recession, and the ruling Front for Victory lost its absolute majority in both houses of Congress during the June 2009 mid-term elections.

Former President Eduardo Duhalde was the first to informally start his pre-candidacy campaign, announcing hypothetical cabinet picks as early as December 2009.

Das Neves became the first Federal Peronist to drop out, while Solá boosted his own prospects by securing an alliance with the conservative Republican Proposal (PRO) on 16 May.

[17] Duhalde narrowly defeated Rodríguez Saá in a Buenos Aires Federal Peronism primary held on 22 May, though both men remained front-runners for their party's nomination.

[19] Rodríguez Saá, in turn, nominated former Santa Fe Governor José María Vernet as his running mate on his Federal Commitment ticket.

[11] The UCR and the Socialist Party (partners in the Civic and Social Agreement) parted ways in May 2011, with Alfonsín and Santa Fe Governor Hermes Binner running on separate slates for the primaries in August, and likely in the general election, as well.

[23][24] Alfonsín nominated former Central Bank President Javier González Fraga, a non-partisan economist close to both the UCR and Federal Peronism, as his running-mate on 2 June.

[15] Binner endorsed GEN leader Margarita Stolbizer for Governor of Buenos Aires following his break with Alfonsín,[24] and formally announced his Broad Progressive Front candidacy on 11 June; he nominated Córdoba Senator Norma Morandini as his running mate.

* Withdrew A poll conducted by Mora y Araujo for Ipsos on 28 September revealed favourability and unfavourability ratings for six of the seven candidates appearing on the general election ballot.

[32] Early results on election night awarded incumbent president Cristina Fernández de Kirchner of the Front for Victory (FPV) a second, four-year term.

Winning in the City of Buenos Aires and every province except San Luis (won by Federal Commitment candidate Alberto Rodríguez Saá),[35] she became the first candidate to obtain an absolute majority of the popular vote (54%) since Raúl Alfonsín in 1983, and upon completion of ballot processing, the margin of victory (37.1%) exceeded Juan Perón's record 36% margin obtained in 1973.

Early projections suggested that President Cristina Kirchner's FpV would increase their representation in the Lower House from 87 seats (out of 257),[40] to around 116; the presence of an estimated ten allies would put them three votes shy of an absolute majority.

[43] The opposition fared better in the Senate, which remained nearly unchanged; the upper house would continue divided between the FpV with a majority of 40 seats (out of 72), and the UCR (around 16) and others with the remainder.

[49] The Mayor of Buenos Aires, Mauricio Macri faced Senator Daniel Filmus of the FpV and film-maker Fernando Solanas of Proyecto Sur.