23. Section 171 of the Principal Act is amended—
(a) by omitting “An elector” and substituting “Subject to subsection (2), an elector”; and
(b) by adding at the end the following subsection:
“(2) A person does not become an Antarctic elector for the purposes of an election under this Act where the person became an Antarctic elector for the purposes of the Commonwealth Electoral Act after the hour of nomination for the election.”.