The by-election for Banaba Island in Kiribati will be held next month.
Its MP, Timon Aneri, died while he accompanied government delegation to the island last month.
An electoral commission official, Takiakia Maatia, told the Kiribati Independent the week long candidate registration period ends on Friday.
Takiakia says the by-election will take place on July the 18th, with the second round, if necessary, scheduled for July the 28th.
Around two hundred people live on Banaba.