KUALA LUMPUR, Malaysia—Former Malaysian leader Mahathir Mohamad claimed victory in national elections Wednesday, saying his opposition coalition had acquired enough seats to form a majority government in parliament, but official results were still being counted and weren’t yet conclusive.
Unofficial tallies by polling agents and political parties compiled by independent media showed that the alliance led by Dr. Mahathir was pulling away, with 104 seats to 71 for Prime Minister Najib Razak’s coalition. In a parliament with...