Voting for Big Brother officially opens as final three celebrate ahead of the live finale

Voting has officially opened for the season finale Big Brother Australia, which airs live on Channel Seven on Wednesday night.

Viewers can now vote for either Chad Hurst, Sophie Budack or Daniel Gorringe to win the jaw-dropping $230,000 cash prize.

The trio celebrated making it to the show’s final day with fireworks and champagne on Tuesday’s episode.

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A lot was riding on Big Brother’s final nomination challenge on Tuesday, as the winner was given the ultimate power over their rivals.

The night before, the remaining four housemates had been told the winner of the challenge would be able to decide who joined them in the final three. 

Fighting for the upper hand, they were tasked with keeping multiple metal balls on a sloping track while running up and down a set of stairs.

Proving it was a case of mind over matter, Chad won the last showdown despite suffering from an ankle injury.

Chad was overcome with emotion after his victory, and wished his late father was around to watch him make it to the final three.

The male model was then given the difficult task of removing one of his rivals from the game ahead of the public vote.

At the eviction ceremony, he told host Sonia Kruger that the decision had come down to either Daniel or Mat, because he wasn’t evicting his girlfriend, Sophie.

After weighing up who was worthy of the final three and whom he could potentially beat in the finale, Chad chose to evict Mat.

The housemates are now competing for a reduced prize of $234,656, after Kieran Davidson stole more than $15,000 from the winner’s kitty last week.

The contestant with the most public votes will be crowned the winner on Wednesday when the live finale begins at 7:30pm.

Head to bigbrother.com.au to cast your vote