[MarkWaldorf]

Beginning with the second season the HouseGuests compete to become Head of Household or HoH. The Head of Household is responsible for nominating two HouseGuests for eviction.[10] During the Live Eviction show, HouseGuests individually go into the Diary Room and cast their vote to evict. Julie then revels the results to the House after all eligible HouseGuests have cast their vote.[11] When two HouseGuests were left, the evicted HouseGuests voted for the winner and in the event of a tie the public would have broken the tie.[12]

During season three a new power was introduced called the Power of Veto (PoV). The Power of Veto winner can choose to veto one of the Head of Household's initial nominations. The winner is also protected from becoming a replacement nominee for the week.[13] Originally, the Power of Veto was silver and if a nominee won the Power of Veto the nominee could not save themselves. The "Golden" Power of Veto, introduced in the last veto competition in season three, could be won by a nominee and used to save themselves. The Golden Power of Veto is now the standard veto since season four.[14][15]

The fourth season introduced the Big Brother Jury, sometimes referred to as the "Jury of Seven". The Jury is made up of the final seven evicted HouseGuests. As each member of the Jury is evicted from the House they are sequestered in a separate house. The jury members are not allowed to watch the show except for segments which include all of the HouseGuests, for example the nominations and Power of Veto ceremonies. The jury members are not shown any Diary Room interviews or any footage involving strategy or twists to the game. The Big Brother Jury votes to determine the winner of Big Brother each season.