By Mark Brook For Daily Mail Australia
Published: 03:38 BST, 16 April 2019 | Updated: 03:40 BST, 16 April 2019
Independent candidate Zali Steggall has been slammed by her ex-husband and his new wife in an extraordinary attack.
Ms Steggall, a champion skier, has been accused of 'political point scoring' and being 'opportunistic' by the couple.
Olympic rowing champion David Cameron, who has two children with Ms Steggall but is now married to barrister Bridie Nolan, labelled his ex-wife an 'idiot'.
Ms Nolan told The Daily Telegraph she was 'appalled' at Ms Steggall's tweeted comments during the Christchurch terror attack on March 15.
Warringah independent candidate Zali Steggall (pictured right with Liberal MP Tony Abbott) has been slammed by her ex-husband and his new wife ahead of the next federal election
In the tweet, which has now been deleted, Ms Steggall said: 'There were so many positive things to share until the news of the terrorist attack in Christchurch hit. Such a start and horrific reminder of where extreme ideology hate and divisive speech leads. We have to do better. My deepest condolences to the families. #warringahvotes #auspol.'
Ms Steggall, an independent candidate for Warringah, was accused of politicisng the horrific attack, in which 50 people lost their lives and another 50 were injured.
Ms Nolan claimed her husband's ex-wife used