Sara Duterte said she decided to hold her inauguration in the country's most developed cities to show her pride as a southern provincial politician who rose to a top national post.
Marcos Jr. filed his papers at the Commission on Elections last month. His party, Partido Federal ng Pilipinas, named Sara Duterte on Saturday as his running mate.
Her reporting has unleashed what media advocates say is a grinding series of criminal charges, two arrests and a deluge of online threats against her and Rappler.
Duterte’s popularity has remained strong despite the Philippines' struggles through the COVID-19 pandemic, with rising infections and death rates and a slow vaccine rollout.