Why do we need to know the flow of campaign funds?

Ahmad Syaikhu
Member of the Indonesian House of Representatives from the PKS faction for the period 2019-2024 from the West Java VII Electoral District
Ahmad Syaikhu (born January 23, 1965) is an Indonesian politician who serves as President of the Prosperous Justice Party for the 2020-2025 term. He is also a member of the DPR RI faction of PKS for the 2019-2024 term from the West Java VII electoral district. He also served as Deputy Mayor of Bekasi, West Java from 2013 to 2018 alongside Rahmat Effendi, who was inaugurated on March 10 2013.[1] This couple was supported by the Golkar Party, Prosperous Justice Party (PKS). Source: Wikipedia