Led by Lourdes Flores, the coalition placed third at the 2001 and 2006 general elections, while at municipal level, it won the capital city of Lima with Castañeda as the mayoral nominee.

[1] At the legislative elections held on 26 January 2020, the party won 1.5% of the popular vote but no seats in the Congress of the Republic under businessman Rafael López Aliaga's leadership.

Due to the return of the traditional parties (the APRA with Alan García and the Christian People’s Party with Lourdes Flores), the rise of Alejandro Toledo from Possible Peru and taking into account that in the last election, Castañeda Lossio only got 1.8% From the electorate's votes, National Solidarity withdrew its presidential plate a month after having registered it and decided to support the candidacy of Lourde Flores.

At municipal level, the coalition succeeded in launching National Solidarity leader Luis Castañeda Lossio for the mayorship of Lima, which ended up defeating incumbent mayor Alberto Andrade of We Are Peru who is a former member of the Christian People's Party, and winning the capital with 39.9% of the popular vote.

[9] For the first months of the campaign, Castañeda polled in first place, but his support would eventually decline as more revelations on alleged corruption during his mayoral term appeared.

Likewise, National Solidarity joined forces with Union for Peru (UPP) "for the 2011 elections, where José Vega, general secretary of that party, appears with the number 7 for Lima."

Later, Heríberto Benitez also resigned from the alliance due to the criticism he received from his colleagues in the parliamentary group when the César Álvarez y la Centralita case broke out.

[14] At the 2016 general election, National Solidarity sealed a alliance with Union for Peru in order to launch businessman Hernando Guerra García as the presidential nominee.

[16] Amid the investigations regarding the Odebrecht case in Peru, Castañeda and National Solidarity were put under scrutiny as the Public Ministry, as the former mayor was banned from leaving the country for the next eight months starting June 2019.

[21] Participating at the 2020 snap parliamentary election following the dissolution of Congress, López Aliaga announced early in the campaign the inclusion of Rosa Bartra, Yeni Vilcatoma and Nelly Cuadros, three former Fujimorista congresswomen in the party's congressional list for the Lima constituency, in an attempt to attract support from extreme conservative circles against abortion and LGBT rights.

[22] At the election, National Solidarity received 1.5% of the popular vote, placing nineteenth out of twenty-one participating lists, thus failing to attain representation.

[24] During this period, Rafael López Aliaga formally announced his candidacy for the presidency in the 2021 general election, stating that he intends to gather all possible support from the country's conservative circles.