Peruvian Nationalist Party

The Nationalist Party had as its antecedent the Peruvian Nationalist Movement (also known as Ethnocacerism). The party was originally conceived to be the main political expression of the ethnocacerist ideology, though the ideology was renounced by party founder Ollanta Humala in 2006.

Ollanta Humala was the Peruvian Nationalist Party's presidential nominee for the 2006 general election, running under a joint ticket with Union for Peru, as the party was not registered on time for the election. Humala lost the runoff against Alan García of the Peruvian Aprista Party. However, the alliance with the Union for Peru would be dissolved, and the members of the Nationalist Party would form the Nationalist bench made up of 25 Congressmen. In 2010, PNP formed the alliance Peru Wins ("Gana Perú") to participate in 2011 general election. In the runoff vote on 5 June 2011, Humala was elected president against Keiko Fujimori of the Force 2011. He served in office on from 28 July 2011 to 28 July 2016.

Initially perceived as a full-fledged socialist government inspired by the Venezuelan Chavismo, Humala's presidency ultimately embraced free-market policies, although not at the same rhythm as previous administrations. Interpreting his sudden change as a betrayal to his voters, the Nationalist congressional caucus was reduced from 47 seats to 26, as most members rejected the government's inaction in fulfilling Humala's campaign initiatives. In addition, First Lady Nadine Heredia sought to be a controversial figure for the administration by indirectly taking a more active role in her husband's work, ultimately being seen as a dual presidency. Pundits agree on qualifying Humala's Nationalist presidency as mediocre, as no substantial changes were made in both economic and social aspects of Peru. Humala was also considered to have shifted towards neoliberalism and the political centre during his presidency.

The party opted to not take part in the 2016 general elections, in order to preserve its status as an official party; in Peru, a party that fails to obtain above 5% in a national election is automatically removed from the registry of political parties. With the party's prospective presidential candidate Daniel Urresti polling at around 1% in the run-up to the election, the PNP decided to refrain from electoral politics until local elections in 2018.

Following a dry spell by not participating in the 2018 regional and municipal elections and the 2020 snap parliamentary election, the party announced Humala as its presidential nominee for the 2021 general election. On election day, with only 1.6% of the valid votes in the presidential election and 1.51% in the parliamentary election, the party failed to overcome the electoral fence and the party lost its registration as a political party.

President: Ollanta Humala (3 October 2005 – 30 December 2013), Nadine Heredia (30 December 2013 – 28 July 2016), Ollanta Humala (28 July 2016 – 7 September 2021)