When the electoral process in the Padang Serai parliamentary seat was postponed following the death of Pakatan Harapan's candidate and incumbent M Karupaiya, it provided space to test how strong the Perikatan Nasional (PN) wave has become.

PN made great gains in GE15, swooping all parliamentary seats in the northern states of Perlis, Kelantan and Terengganu and most of the parliamentary seats in Kedah.

However, they still won fewer seats compared to...