Deni Irvani, M.Si., is the Director of Research at Saifulmujani Research & Consulting and has previously worked as a researcher at the Indonesian Survey Institute. He holds a Bachelor’s and Master’s degree in Statistics from Bogor Agricultural University and is currently completing his Ph.D. in the same field at the same institution. His expertise in survey methodology, sampling, and estimation has provided him with extensive opportunities to be involved in various national and regional quantitative research projects. He is also actively involved as a board member of Perhimpunan Survei Opini Publik Indonesia (Persepi).

Dr. Rizka Halida is a faculty member of the Faculty of Psychology at the University of Indonesia. Her interests primarily lie in Social Psychology and Political Psychology. She obtained her Ph.D. from the Faculty of Psychology, University of Indonesia in 2017. Her dissertation focused on vote-buying, specifically examining the factors that influence voters when faced with money politics during elections. Currently, Rizka serves as the Chair of the Master’s Program in Psychology. Additionally, she is a researcher at the Indonesian Survey Institute and the Indonesian Political Indicator. She is involved in research on democracy, voting behavior, interreligious relations, and corruption in Indonesia (https://labcaw.ui.ac.id/people-lab/dr-rizka-halida/).