GetUp will prioritise press freedom to prevent the Morrison government from "eroding civil liberties" after the progressive outfit ran its most successful post-election campaign on the subject.

In an address to the National Press Club on Wednesday, GetUp national director Paul Oosting said the left-wing activist organisation would stay the course on climate change despite a bruising federal election campaign, which left some accusing GetUp of alienating voters.

GetUp national director Paul Oosting says the organisation's press freedom campaign could be a mainstay. Credit:AAP

The fundraising juggernaut raised $12 million in the year leading up to the May federal election and spent $4 million during the campaign, toppling one MP from its seven-electorate "hit list" - former Prime Minister Tony Abbott - in what it said at the time was a "disappointing" result caused by successful conservative fear campaigns.

The progressive organisation launched a campaign to protect press freedom following the Australian Federal Police raids on News Corp journalist Annika Smethurst's home and the ABC's Ultimo headquarters.