The clip shows a young woman at a BBQ asking a man if he's heard Labour is building 100,000 homes to solve the housing crisis.

The man does some quick maths and calculates that's 33 houses built every day for the next 10 years. The woman nods excitedly, to which the man simply says 'Nope' as he chuckles and takes a swig of a Hopt soda.

"How many have they built so far?" the woman asks, to which the man says 33.

A third character is then introduced in the form of an older bearded gentleman manning the barbeque. He turns to the other two characters, a frankfurter speared on the end of his fork, and gleefully proclaims: "They're all sizzle and no sausage."

The ad has been met with accusations of sexism, with social media users criticising its "patronising" portrayal of two men explaining something to a naïve, uninformed woman.

"Women! Aren't you lucky to have men at BBQs to explain maths and politics to you?" joked @David_Cormack on Twitter.

@Abigail1963 sarcastically said it was bold of National to use the "man explains facts to silly girl trope", while @TristanRS asked the party to "read the room".