24. Is there a ban on political parties taking loans in relation to election campaigns?

For Federal elections:

Australian Electoral Commission, 'Funding Disclosure Guide for Political Parties',  6 July 2016http://www.aec.gov.au/Parties_and_Representatives/financial_disclosure/guides/political-parties/important.htm

For States and Territories:

"Election funding and disclosure in Australian states and territories: a quick guide" 9 November 2017, http://parlinfo.aph.gov.au/parlInfo/download/library/prspub/5621507/upload_binary/5621507.pdf

"Section 306A of the Act provides that it is unlawful for a political party or a person acting on behalf of a political party to receive a loan of more than the disclosure threshold from a person or entity other than a financial institution unless a record of the loan is kept"  Section 306A(3) sets out the reporting criteria for loans from different entities.  

There are various funding disclosure laws for loans for each state and territory goverment.