Australia's telecommunications watchdog has been flooded with complaints about politicians "robo-calling" voters during the election campaign.

The Australian Communications and Media Authority (ACMA) says it has received 244 complaints about election-related telephone calls during May and June, and 214 of those complaints related to "robo-calls".

"The actual may figure may be higher, but there was insufficient information in a number of complaints received to be able to clearly state that the calls related to election/political matters," an AMCA spokesperson said.

A robo-call is an automated telephone call that delivers a recorded voice message.

The spike in campaign calls and text messages sent to voters during the election has prompted privacy advocates to call on the major political parties to explain where they are sourcing people's private phone numbers.

On Sunday, Prime Minister Malcolm Turnbull said he was interested in looking into tighter regulation of robo-calls during elections.

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No refuge on Do Not Call Register

Australia's privacy laws allow political parties to call and send text messages to telephone numbers on ACMA's Do Not Call Register.

Political parties are also allowed to campaign directly to voters who have opted for their telephone numbers to not appear on directories.

ACMA says it received 37 complaints about text messages containing the word "Liberal" during the election campaign, and 36 complaints about messages containing the word "Labor".

Some text messages targeted voters living in particular electorates.

A text supporting the Greens' Adam Bandt which was sent to voters. ( Supplied )

One sent to voters in the Queensland seat of Bonner from "Malcolm" campaigned on behalf of the local Liberal member.

"A vote for Ross Vasta LNP = Stable Govt. & a Plan delivering jobs. An Ind/Green/ALP vote means chaos. Together, lets see it through. Best, Malcolm Turnbull."

Mr Vasta's office said it was not involved in sending out the message, and referred 7.30 to the Liberal Party's campaign headquarters.

A party spokesperson did not return calls.

In Victoria, messages from the Greens before the election also targeted voters in specific seats.

"Tomorrow, stand up for what matters. Vote 1 Adam Bandt for a strong independent voice for Melbourne," read one text to a Melbourne voter, passed on to 7.30.

Voters in the Melbourne electorate of Higgins also reported receiving texts from failed Greens candidate Jason Ball.

The Greens did not respond to requests for information about where it sourced voters' personal mobile phone numbers.

Activist group also targeted voters via phone

The activist group GetUp, which also campaigned to voters by phone during the campaign, said it sourced voters' personal information from its own data and from third-party "data-vendors".

The AFP is looking into who sent out this text from 'Medicare' ( ABC News )

"GetUp has commercial relationships with data vendors," a spokesperson said.

"For the most part, it's to authenticate transactional information. The specific details of these relationships are commercial-in-confidence."

The Australian Federal Police is looking into the source of a text message voters received the night before the election which appeared to be sent by "Medicare".

"Mr Turnbull's plans to privatise Medicare will take us down the road of no return. Time is running out to Save Medicare," the text read.