The PASO primaries were held on Sunday, 11 August, amid high turnout consistent with recent past elections and estimated by Interior Minister Florencio Randazzo at over 70%.

The Province of Buenos Aires, the largest electoral district and home to 3 out of 8 Argentines, dominated campaign news much as it has in every mid-term election in recent years.
As the party list filing deadline on 22 June drew near, the spotlight focused on the popular mayor of Tigre, Sergio Massa.
Massa had been elected mayor on the FpV slate, and had served in a number of high-ranking posts in the administrations of both Cristina Kirchner and her predecessor and husband, the late Néstor Kirchner.
His relationship with the Kirchners had been a difficult one, however, and though polling gave him better prospects running for Congress under the FpV party list than on a separate slate, Massa ultimately opted to form his own Frente Renovador (Renewal Front) ticket with the support of the 'Group of 8' Buenos Aires Province Mayors and others, notably former Argentine Industrial Union president José Ignacio de Mendiguren (an ally of Kirchnerism).

Massa's decision to run as an opponent deprived the FpV of a key ally and he moved quickly to consolidate the center-right vote in Buenos Aires Province by obtaining the endorsement of the PRO (which ran on the Renewal Front list headed by Massa rather than on its own).
Federal Peronist Congressman Francisco de Narváez, who would be in direct competition with the Renewal Front for the province's large center-right Peronist vote, believed that the charismatic Massa was in reality a "trojan horse" for the FpV; Renewal Front congressmen, per his reasoning, would run against Kirchnerism only to vote with them once elected to Congress.
The Renewal Front, in any case, ultimately defeated the FpV list headed by Lomas de Zamora Mayor Martín Insaurralde by about 35% to 30%, with the Progressive, Civic and Social Front (FPCyS) list headed by Congressmen Margarita Stolbizer and Ricardo Alfonsín and Congressman de Narváez's Front for Union and Work list receiving about 11% each; were this result to be mirrored in October, de Narváez would lose four of eight congressmen he led in 2009 on the successful Unión/PRO list.

The centrist Civic Coalition ARI, for its part, arguably achieved its most significant political victory in four years when Congressman Alfonso Prat-Gay forged the Civic Coalition-led Juntos UNEN (Together They Unite) alliance with UCR Congressional caucus leader Ricardo Gil Lavedra, leftist Proyecto Sur leader Pino Solanas, former Civic Coalition head Elisa Carrió (who left the CC in 2012 following a poor showing in the 2011 presidential race), and Victoria Donda of the leftist Freemen of the South Movement in January 2013.
Prat-Gay was nominated as the lead UNEN candidate for a seat in the Argentine Senate for the City of Buenos Aires (where the alliance was strongest), and Gil Lavedra the lead UNEN candidate for the Lower House; former Economy Minister Martín Lousteau (who fell out with President Fernández de Kirchner after his 2008 dismissal) joined Gil Lavedra and Carrió on the UNEN Lower House list for the city.

The City of Buenos Aires, ruled since 2007 by a PRO mayor, handed the rightist PRO an upset by giving UNEN standard-bearers Prat-Gay and Solanas the two Senate seats (out of three) accorded to the winning list in each district, edging out former Vice-Mayor Gabriela Michetti (who would obtain the third seat) and current City Environment Minister Diego Santilli, and costing FpV Senator Daniel Filmus his own seat.
The PRO party list for the city's delegation to the Lower House, headed by Rabbi Sergio Bergman (a member of the Buenos Aires City Legislature) and Bank of the City of Buenos Aires director Federico Sturzenegger, was likewise defeated by the UNEN list headed by Congressmen Gil Lavedra and Carrió.
The FpV list led by Legislator Juan Cabandié, came in third.

Córdoba Province, where Governor José Manuel de la Sota broke with the president after being elected with her endorsement, is where the a
The PASO primaries were held on Sunday, 11 August, amid high turnout consistent with recent past elections and estimated by Interior Minister Florencio Randazzo at over 70%.
The Province of Buenos Aires, the largest electoral district and home to 3 out of 8 Argentines, dominated campaign news much as it has in every mid-term election in recent years. As the party list filing deadline on 22 June drew near, the spotlight focused on the popular mayor of Tigre, Sergio Massa. Massa had been elected mayor on the FpV slate, and had served in a number of high-ranking posts in the administrations of both Cristina Kirchner and her predecessor and husband, the late Néstor Kirchner. His relationship with the Kirchners had been a difficult one, however, and though polling gave him better prospects running for Congress under the FpV party list than on a separate slate, Massa ultimately opted to form his own Frente Renovador (Renewal Front) ticket with the support of the 'Group of 8' Buenos Aires Province Mayors and others, notably former Argentine Industrial Union president José Ignacio de Mendiguren (an ally of Kirchnerism).
Massa's decision to run as an opponent deprived the FpV of a key ally and he moved quickly to consolidate the center-right vote in Buenos Aires Province by obtaining the endorsement of the PRO (which ran on the Renewal Front list headed by Massa rather than on its own). Federal Peronist Congressman Francisco de Narváez, who would be in direct competition with the Renewal Front for the province's large center-right Peronist vote, believed that the charismatic Massa was in reality a "trojan horse" for the FpV; Renewal Front congressmen, per his reasoning, would run against Kirchnerism only to vote with them once elected to Congress. The Renewal Front, in any case, ultimately defeated the FpV list headed by Lomas de Zamora Mayor Martín Insaurralde by about 35% to 30%, with the Progressive, Civic and Social Front (FPCyS) list headed by Congressmen Margarita Stolbizer and Ricardo Alfonsín and Congressman de Narváez's Front for Union and Work list receiving about 11% each; were this result to be mirrored in October, de Narváez would lose four of eight congressmen he led in 2009 on the successful Unión/PRO list.
The centrist Civic Coalition ARI, for its part, arguably achieved its most significant political victory in four years when Congressman Alfonso Prat-Gay forged the Civic Coalition-led Juntos UNEN (Together They Unite) alliance with UCR Congressional caucus leader Ricardo Gil Lavedra, leftist Proyecto Sur leader Pino Solanas, former Civic Coalition head Elisa Carrió (who left the CC in 2012 following a poor showing in the 2011 presidential race), and Victoria Donda of the leftist Freemen of the South Movement in January 2013. Prat-Gay was nominated as the lead UNEN candidate for a seat in the Argentine Senate for the City of Buenos Aires (where the alliance was strongest), and Gil Lavedra the lead UNEN candidate for the Lower House; former Economy Minister Martín Lousteau (who fell out with President Fernández de Kirchner after his 2008 dismissal) joined Gil Lavedra and Carrió on the UNEN Lower House list for the city.
The City of Buenos Aires, ruled since 2007 by a PRO mayor, handed the rightist PRO an upset by giving UNEN standard-bearers Prat-Gay and Solanas the two Senate seats (out of three) accorded to the winning list in each district, edging out former Vice-Mayor Gabriela Michetti (who would obtain the third seat) and current City Environment Minister Diego Santilli, and costing FpV Senator Daniel Filmus his own seat. The PRO party list for the city's delegation to the Lower House, headed by Rabbi Sergio Bergman (a member of the Buenos Aires City Legislature) and Bank of the City of Buenos Aires director Federico Sturzenegger, was likewise defeated by the UNEN list headed by Congressmen Gil Lavedra and Carrió. The FpV list led by Legislator Juan Cabandié, came in third.
Córdoba Province, where Governor José Manuel de la Sota broke with the president after being elected with her endorsement, is where the a
2013 Argentine legislative election