How Do I Stop Spam from the Palmer United Party?

Today I received seventeen copies of a "New Year Greetings"  email from the Palmer United Party. I am happy to receive the occasional newsletter from my elected representatives, but Clive Palmer MP is not one of them.

I have forwarded all the messages to the ACMA Spam Intelligence Database. Any suggestions on how to stop this? There is an unsubscribe offer at the end of the message, but a posting to Whirlpool indicates that a request to be removed from the mailing list resulted in more email.

The  Palmer United Party appears to use the IT company, Alacrity Technology, based in Mitchell ACT. The company also promotes mobile gambling technology.

SPAM from Palmer United Party

Today I found I had 21 email messages from Clive Palmer of the Palmer United Party. I understand that political parties are exempt from Spam legislation, but apart from urging everyone I know to not vote for the Palmer United Party, is there some way to stop this? Can Mr Palmer's companies, which presumably funding this Spam, be prosecuted?

Two of the emails were to my ACS addresses, two to my ANU addresses and the rest my company addresses. Some of the addresses I have not used for some time. It appears that the Palmer United Party harvested the email addresses from web pages.

The email contains a link to Alacrity Technologies, which appears to be a reputable company (with a reference from the Royal Australian Navy on its home page). Alacrity might want to consider the negative effect on its reputation which an association with Spammers will have.