PKR and PAS are facing off in one parliamentary seat in Sabah and six state seats in Penang, Selangor, Johor and Terengganu.
The two opposition parties will vie for the Labuan parliamentary seat, the Sungai Acheh state assembly seat in Penang, Kota Damansara state seat in Selangor, Panti in Johor and Kota Putera, Bukit Besi and Seberang Takir state seats in Terengganu.