The aspiring Queensland politician filmed slapping his toddler across the head in a restaurant has withdrawn his candidacy from tomorrow's election.

Jason Deller, an independent candidate for Kawana, read a tearful statement apologising to his family and the electorate for his actions today.

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Video obtained by 9NEWS shows Mr Deller throwing cold water on his baby boy and swiftly slapping his other son, three, when the youngster reaches for nearby table decorations.

"Unfortunately I reacted inappropriately,” an emotional Mr Deller said.

“I sincerely apologise to my son, my wife, and those who witnessed the event."

He said the incident was part of a series of “challenging events” he and his wife faced on Sunday morning.

Mr Deller added his son has behavioural issues and that the family had sought support.

“As a father I work hard to provide the support people need to grow up as healthy and happy adults," Mr Deller said.

“I am completely devastated at how this event has been presented in public but fully understand my responsibilities as a male and as a father to ensure the safety and care of my children and family.

Mr Deller was captured on CCTV pouring water on his young son. (Supplied)

“I entered this campaign to make a difference in the community, however out of respect for the community reception and wellbeing of my family, I intend to withdraw my candidacy as the independent for Kawana at the election tomorrow.

"I will devote my time to continuing to nurture my beautiful family and regain our strength.”

Earlier, Mr Deller reportedly claimed police told him no further action would be taken over the incident.

"It will be a note on my record, that’s all," he told News Corp .

Mr Deller is campaigning against Attorney-General Jarrod Bleijie. (9NEWS)

Mr Deller said his wife, who was filmed sitting by during the incident, had been "upset" by the public attention.

"My wife's very upset and said that if this is what being in public life's like, then perhaps I shouldn't pursue it," he said.

A number of voters in the Kawana electorate, where Mr Deller will take on Attorney-General Jarrod Bleijie in the polls tomorrow, told 9NEWS the footage would influence their vote.

The incident occurred during a family meal at a busy Sunshine Coast café.

The independent candidate for Kawana recently took to Facebook to praise politicians with children. (9NEWS)

After being slapped, the older boy is left to wipe away his tears as his baby brother is ripped from his high chair by Mr Deller, who storms out.

Mr Deller's wife then finishes her meal and heads straight for the front door.

On his website, Mr Deller attributes his decision to run to his “amazing wife and four beautiful children … who inspire him to be a better man and help make this world a better place”.

Meanwhile, on Facebook earlier this week he said he applauded electoral candidates with children.

“I'm looking after mine today rather than campaigning. Choices,” the post read.

Queensland treasurer Tim Nicholls said the video was "unbecoming" and "unlawful".

Mr Deller said the incident had been taken out of context and said it would be surprised if it did not happen in other households.