as violence, or may voluntarily leave the house but they are not allowed to return to the game, such as the case of Scott Weintraub during the season. Some changes from previous seasons were implemented throughout the course of the game. The main twist for the year was The X-Factor. Eight HouseGuests were introduced, only to have five HouseGuests' exes compete against them in the game. Another change in the format, introduced in the last veto contest of Big Brother 3, was the Golden Power of Veto, in that if a nominated person won such a veto, they would be allowed to take themselves off consideration for voting, which was not allowed when the veto was introduced originally the year before, in addition to casting a sole vote for eviction during the Final four. Since its inclusion, the Golden Power of Veto has appeared in subsequent seasons, albeit with only minor changes. Due to a possibility of a tie and an America's vote is required to resolve a tie, a change was made to the Jury beginning this season whereas the Jury was reduced to the last seven evicted HouseGuests (which would remain until season 14 before expanding to nine members) who formed the jury that determined the eventual outcome. Unlike previous seasons where the evictees were sent back home and could watch the series freely, jurors were placed in a sequestered house, but were not be allowed to watch the show except for competitions and ceremonies that include all of the remaining HouseGuests. They were still have entry to the Diary Room but footages of the interviews, including potential strategy or details regarding nominations, were not shown on air. HouseGuests Thirteen HouseGuest were cast for this season of Big Brother. One of the original selections, Brandon Showalter, was kicked off of the show during the sequester period, after it was revealed he had communicated with his girlfriend. After his removal from the game, Jee was sent in as his replacement. As part of this season's twist, five of the original eight HouseGuests were shocked to find that an ex would be playing the game with them, as part of the "Ex-Factor" twist. The exes were Jun and Jee, Alison and Justin, Erika and Robert, David and Michelle, and Amanda and Scott. Future appearances Alison Irwin competed on The Amazing Race 5 with her then-boyfriend Donny Patrick. Alison Irwin and