Malaysia’s former economy minister Rafizi Ramli and his breakaway party, Bersama, are unlikely to emerge as a credible third force in the country’s political landscape, but they could still siphon votes away from the reformist Pakatan Harapan (PH) coalition led by Prime Minister Anwar Ibrahim. Bersama’s first electoral test, in Johor on Saturday, will be watched less for the number of seats it wins than for the votes it might peel away from PH in multi-cornered contests, where analysts warn...