If a reportable political donation is, during an election campaign period in relation to an Assembly election, received, by or on behalf of a person who is or becomes a third-party campaigner in relation to the election, for the purposes of incurring, during that period, electoral expenditure by the person, the official agent in relation to the person is required to disclose the donation in a donation declaration that is lodged under section 49 within 7 days after whichever of the following days occurs last:

(a) the day on which the person becomes a third-party campaigner in relation to the election;

(b) the day on which the political donation is received.