Rodrigo Duterte 2016 presidential campaign
The 2016 presidential campaign of Rodrigo Duterte was announced on November 21, 2015. Rodrigo Duterte, who was then serving as Mayor of Davao City, had refused to run and turned down other presidential and vice-presidential aspirants' offers to be his running mate, including that of Jejomar Binay, Miriam Defensor-Santiago and Bongbong Marcos.
Source: Wikipedia — Rodrigo Duterte 2016 presidential campaign (CC BY-SA 4.0)