Two groups emerged in line with the plebiscite. The pro-division group, named as "3-in-1", was spearheaded by the Palawan provincial government. Those who were against coalesced into the "One Palawan Movement". Cynthia Sumagaysay-Del Rosario, a convener of the One Palawan Movement said that more voters did not vote for governor
Jose Alvarez in the
2019 gubernatorial election, with Alvarez winning 207,875 votes, as against the 142,954 from other candidates, and 172,485 who did not vote for governor. Winston Arzaga, the provincial information officer, said that Del Rosario's findings "does not deserve a comment", and that contrary to those who opposed the division, the provincial government had been conducting an information education campaign for the proposed division, even in its bill stage. By December 2020, Governor Alvarez was confident of the measure being approved by the people. Later that month,
The Philippine Star branded the plebiscite as "
gerrymandering in a pandemic". The Palawan NGO Network Inc. (PNNI) opposed the proposal of dividing Palawan. In January 2021, the
Palawan Provincial Board passed a resolution declaring environment lawyer and PNNI chief Robert Chan as
persona non grata or unwelcome in Palawan. The resolution came after a two-year-old video circulated on social media, where Chan said that Palawan is "terribly mismanaged and neglected, with
illegal logging, illegal fishing, and mining seemingly promoted to give in to big business." In response to the declaration, Chan inferred that the "no" campaign for the plebiscite may be gaining ground. The National Secretariat for Social Action, Justice and Peace of the
Catholic Bishops' Conference of the Philippines expressed concern on the plebiscite, saying the division would affect Palawan's biodiversity and indigenous peoples' communities. Apostolic coordinator of the
Apostolic Vicariate of Taytay Father Rey Aguanta said that "the law was mostly due to personal and vested political interests, and not to pave the way for genuine human development", and that the money spent for the plebiscite should have instead been spent on COVID-19 vaccines and other services. On February 11, 2021, the campaign period officially started, which was scheduled to end on the eve of the plebiscite for
election silence. Any Filipino citizen based in the Philippines, including those from outside Palawan could legally participate in the campaign. Appointed government officials were barred from participating. By the following week, the
Philippine Daily Inquirer published an opinion piece from the Coalition Against Land Grabbing urging voters to vote "no" in the plebiscite, preferring for the local government to implement laws on wildlife and indigenous peoples, and that the people in Palawan did not ask their province to be divided. Less than two weeks before the vote, the Legal Network for Truthful Elections (LENTE), an elections watchdog, asked the commission to conduct debates regarding the plebiscite. LENTE cited limited face-to-face interactions, poor telecommunications, and no local television channel was focused on an information campaign about the plebiscite. The commission replied the next day that instead of debates, they would conduct an information campaign via radio. Radio was chosen as the best mass medium due to Palawan's poor internet connectivity. The commission assured both pro- and anti-division groups would be given airtime. On a week before the plebiscite, One Palawan Movement accused the pro-division camp of buying votes; the
Partidong Pagbabago ng Palawan, a political party supporting the province's division, dared the anti-division camp of showing evidence of such activities. == Results ==