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The final boot camp in Miami for the contestants, who are judged on their singing, dancing and performance styles. Also, mentoring by the judges.

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The Top 16 acts compete.

The remaining contestants visit the homes of the judges for mentoring.

The Top 16 acts compete.

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THE X FACTOR introduces the Top 12 Finalists.

The Top 12 finalists from the four categories - Demi Lovato's Girls, Paulina Rubio's Boys, Kelly Rowland's Over 25s, and Simon Cowell's Groups - perform live for their chance to win THE X FACTOR. After the performances, it's up to America to vote to keep their favorite acts safe in the competition.

The Top 12 Acts perform again for your votes due to a technical snafu.

The remaining hopefuls perform.

Contestants face elimination.

The finalists perform songs by U.K. artists.

The artists face elimination.

The acts perform with a live band.

The acts face elimination.

The remaining acts perform.

The contestants face elimination.

The acts each perform two songs.

Elimination.

The remaining acts perform.

Mario Lopez announces the winner.