After the Madani government’s loss at Sungai Bakap, the Nenggiri by-election will be another test for the Pakatan Harapan-BN collaboration, as well as BN-Umno’s influence on voters.

The Nenggiri state constituency is under the Gua Musang parliamentary constituency in Kelantan, and Umno has monopolised the hearts of voters there for decades.

However, the “green wave” in the 15th general election...