Regrettably, political parties are exempt from the DNC Register, even in Australia.
"Registered charities, educational institutions calling students, government bodies and registered political parties are exempt and
are allowed to make telemarketing calls to numbers on the register"
Political campaign-related autodialed or prerecorded voice calls, including autodialed live calls, autodialed texts, and prerecorded voice messages, are prohibited to cell phones, pagers or other mobile devices without the called party's prior express consent.
If you think you’ve received a political robocall or text that does not comply with the FCC’s rules, you can file an informal complaint with the FCC at fcc.gov/complaints. If you are receiving texts that you didn’t ask for, report the sender by forwarding the texts to 7726 (or "SPAM"). Campaigns should also honor opt-out requests if you reply "STOP."