Tomorrow, Saturday the 29th of August, voters in Slim will cast their ballots in a by-election. It will be a three-cornered fight between Umno’s Zaidi Aziz, the Pejuang candidate, Amir Khusyairi Tanusi, and independent candidate Santharasekaran Subramaniam. Melisa Idris and Sharaad Kuttan speak to Ainul Adzellie Hasnul, Centre for Policy Research and International Studies, Universiti Sains Malaysia.