Union for Peru is a Peruvian political party founded by Javier Pérez de Cuéllar, an ex-UN Secretary General, in 1994 to run for the presidency of Peru in the 1995 general elections. Originally a social democratic party, the party became the main political home of the Peruvian ethnocacerist movement in the late-2010s after a group led by former Army Major Antauro Humala joined the party. Humala later formed the Patriotic Front in 2018 and contested the 2021 general elections.

General elections were held in Peru on 9 April 2000, with a run-off of the presidential election on 28 May. The elections were highly controversial and widely considered to have been fraudulent. Incumbent President Alberto Fujimori was re-elected for a third term with almost three-quarters of the vote. However, the elections were tainted with allegations of unconstitutionality, bribery, structural bias, and outright electoral fraud. Alejandro Toledo boycotted the second round of the presidential election, in which over 30% of ballots were declared invalid. Fujimori subsequently called for new elections after his scandal, fled Peru, and faxed in his resignation from a hotel in Japan.