Contestants have been individually called to the Diary Room to cast their votes on whether they think Heaven Africa, Aaron Allard-Morgan or Aden Theobald will leave the house tonight.
Those who bet correctly will win a seat at an exclusive poker party in the spare bedroom alongside the two surviving nominated housemates.
Heaven is currently the bookies' choice to get evicted tonight, while Aaron is one of the favourites to win the reality show.
See these Big Brother scenes tonight from 9pm on Channel 5.
> Big Brother: Heaven vs Aden vs Aaron: Who should be evicted?
Watch Big Brother reveal the results of the nominations to the housemates below: