Following the formation of the Unity Government in December 2022, two of its component coalitions, Pakatan Harapan (PH) and Barisan Nasional (BN), jointly campaigned during the state government elections held in August 2023. A key question arising from this cooperation between PH and the BN lead party, the United Malays National Organization (UMNO), was the extent to which it would strengthen the appeal of both coalitions, especially among Malay voters. Using granular polling station and polling stream data for forty-seven seats contested by the PH member Democratic Action Party (DAP), this paper explores the effect of this relationship on voter support. This Trends in Southeast Asia finds that, contrary to expectations, DAP actually gained voter support from campaigning with UMNO.

1. Elections ? Malaysia ? Statistics. 2. Democratic Action Party. 3. Electoral coalitions ? Malaysia. 4. Malaysia ? Politics and government ? 21st century.