Perikatan Nasional’s massive win in the Padang Serai election in Kedah has prompted neighbouring Penang to raise the alarm as the “green wave” shows no signs of abating.

Penang Chief Minister Chow Kon Yeow has predicted that Pakatan Harapan could lose six or seven seats in the upcoming state polls based on the trend seen in last month’s general election.

Although this would not threaten Harapan’s control of the state, he reportedly said that...