Poll cards have been sent to more than 3,700 registered electors of the Peng Chau and Hei Ling Chau Constituency to remind them to vote in the Islands District Council by-election.
Electors who have not yet received their cards should call 2891 1001.
Polling will be held at the Peng Chau Sports Centre, Peng Chau Municipal Services Building, 6 Po Peng Street, Peng Chau, from 7.30am to 10.30pm on September 7.
The three candidates are Chan Chi-lin, Josephine Tsang and Wong Chi-lam.