However, Hernández would resign his candidacy despite strong support in the polls following major disagreements with the party leadership, and the candidacy would be assumed by Piza. In 2015 Calderón and his followers left the party and founded a new one called Social Christian Republican Party (an allusion to Calderón's father historical party). Nevertheless, PUSC saw a victory in the 2016 municipal election gaining second place in municipal votes surpassing ruling PAC and receiving much more votes than Calderón's new party. PUSC obtained 15 mayors (second in number after PLN) and saw an increase in its electoral support, unlike PLN that although the more voted party did saw a decrease in support. In 2018 Piza both Piza and Hernández were nominees but from different parties; Piza from PUSC and Hernández from PRSC attaining fourth and sixth place respectively and supporting opposite candidates in the second round. Piza would support PAC's candidate Carlos Alvarado Quesada who won the election on second round and would take the office of Prime Minister during Alvarado's first year of tenure.