Johor's state elections will test if Singapore-linked infrastructure projects and investments have translated into voter support amidst rising living costs.

The state elections in Johor and Negeri Sembilan, scheduled for July 11 and August 1, have opened two battlegrounds where economic issues take precedence over the political wrangling of Malaysia’s coalition parties. The ballot will also test whether Singapore-linked rail projects, economic zones and a data centre investment push have translated into support among Johor’s 2.73 million voters grappling with higher living costs. Nominations to fill 56 seats in the Johor state assembly will begin on...