Singapore’s elections department said that three candidates will run for president in a vote on Sept. 1 after filing their nomination papers on Tuesday.

Ng Kok Song, Tan Kin Lian and former deputy premier Tharman Shanmugaratnam will compete in the city-state’s first contested presidential election in over a decade. It’ll be just the third time since a constitutional amendment in 1991 transformed the post into a publicly elected one.

Six years ago, incumbent Halimah Yacob got the job in an uncontested exercise. She will not seek the office — a largely ceremonial role — for a second time.

--With assistance from Philip J. Heijmans and Andrea Tan.