The day that could see Peter Dutton installed as prime minister has had an ugly start after vandals attacked the former home affairs minister’s electoral office.

Brick pavers were thrown at the front windows and doors of his Dickson headquarters in Strathpine, north of Brisbane.

Six windows were smashed and the two front doors had holes pushed into the laminated glass the size of a football.

Police said they believed no-one entered the building when it was damaged just before 2:00am.

Police have appealed for witnesses.

Vandals have attacked the Qld electorate office of Liberal leadership contender Peter Dutton.

Bricks have been thrown thru windows at the Strathpine office. @abcbrisbane @abcnews #libspill pic.twitter.com/GohliSmH9b

— Shelley Lloyd 🎙 (@shelleymlloyd) August 23, 2018

It is not the first time tMr Dutton’s office has been targeted.

In March, a man and a woman hurled a rock and paint at the front of the office, when three people were inside. No one was hurt.

A noon showdown for the leadership of the Liberal Party today may seal the political fate of Malcolm Turnbull and decide who becomes the next prime minister.

The three leadership aspirants – Peter Dutton, Julie Bishop and Scott Morrison – are still waiting for the solicitor-general to decide whether Mr Dutton is even eligible to sit in Parliament.

Mr Dutton holds the electorate of Dickson by a slender margin and there are fears he could lose the seat at the impending federal election even if he is elevated to the prime ministership.

The Liberals recorded a huge drop in support during the July byelection in the adjoining seat of Longman.