Nauru citizens can authorize another Nauru citizen to vote for them by proxy while they are overseas. The Electoral (Proxy Voting) Regulations 2004 are not available online. Researcher emailed Nauru Parliament to request a copy of these Regulations. No reply was received. However, Electoral (Proxy Voting) (Amendment) Regulations of 2010 and Electoral (Proxy Voting) Regulations 2016 can be found online. The Electoral (Proxy Voting) Regulations 2004 have been extended to apply to Referendums: see Referendum Procedures (Proxy Voting) Regulations 2010. See also a sample Proxy Voting Application
Section 44: Cabinet may make regulations
(1) Cabinet may make regulations under this Act.
(2) The regulations may provide for the following matters:
(a) voting by proxy;
(b) voting by people who are unable to attend a polling place […]