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The fifteenth season of the American reality television show, The Voice premiered on September 24, 2018, on NBC. Adam Levine, Kelly Clarkson, and Blake Shelton returned as coaches from the previous season. Jennifer Hudson, who last coached in season 13, returned, replacing Alicia Keys. For the first time in its history, the show featured a fifth coach, Kelsea Ballerini, who selects contestants to participate in The Comeback Stage.

Coaches and hosts
On May 11, 2018, Kelly Clarkson confirmed she would return alongside Jennifer Hudson, Adam Levine and Blake Shelton. Carson Daly will return for his fifteenth season as host. It was announced on September 10 that Kelsea Ballerini would become a fifth coach, mentoring unsuccessful auditioners on an online version in a new round called The Comeback Stage. The Block, added in season 14, would return for a second season. A new round this season, entitled "The Comeback Stage", will see six artists who did not turn a chair in the Blind Auditions get a second chance to return to the competition for the live shows. The six artists remained, mentored by Kelsea Ballerini, will compete against each other in a digital companion series, with the winner securing a spot in the Top 13.

This season's advisors for the Battle Rounds are CeeLo Green for Team Adam, Thomas Rhett for Team Kelly, Halsey for Team Jennifer, and Keith Urban for Team Blake.

Teams
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Winner

Runner-up

Third place

Fourth place

Eliminated in Live Shows

Transferred to other team

Eliminated in the Live Playoffs

Stolen in the Knockout rounds

Eliminated in The Knockouts

Stolen in the Battle rounds

Eliminated in the Battle rounds

Blind auditions

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The Battles
The second half of the Battle Rounds started on October 15. Season fifteen's advisors include: CeeLo Green for Team Adam, Thomas Rhett for Team Kelly, Halsey for Team Jennifer, and Keith Urban for Team Blake. The coaches can steal two losing artists from other coaches. Contestants who win their battle or are stolen by another coach will advance to the Knockout rounds.

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The Knockouts
The Knockouts round started on October 29. The coaches can each steal one losing artist from another team and save one artist who lost their Knockout on their own team. The top 24 contestants then moved on to the Live Playoffs. Mariah Carey is the advisor to contestants from all teams in this round.

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The Comeback Stage
For this season, the show added a brand new phase of competition called The Comeback Stage that was exclusive to The Voice mobile app and The Voice YouTube channel. After failing to turn a chair in the blind auditions, artists had the chance to be selected by fifth coach Kelsea Ballerini to become a member of her six-person team. The Comeback Stage consists of three rounds. In the first, it is the Battle round. Artists would be paired up and given a solo song to perform for Kelsea's favor (similar to the Knockouts). In the second, it is the Comeback's Knockout round. The three remaining artists were given another song to sing, with two of them advancing to the final stage. The third and final stage is run in conjunction with the Live Playoffs. The two remaining artists perform live for America's votes in the first Twitter Instant Save of the season, with the winner officially joining one of the four main teams of their choosing as a part of the Top 13.

Artists who appeared on other shows or previous seasons

 * Patrique Fortson (as Patrick Fortson) was a contestant on the second season of American Idol and was eliminated in the semifinal round.
 * Mercedes Ferreira-Dias and MaKenzie Thomas were both on the fourteenth season of The Voice, but neither received any chair turns.
 * Dave Fenley appeared on the eighth season of America's Got Talent but lost judges' votes and was eliminated in the semifinal round. He performed the song "Make America Great Again" at the Republican National Convention in 2016.
 * Reagan Strange appeared as one of the fifth-grade whiz kids on FOX’s  Are You Smarter Than a 5th Grader? in 2015.
 * Jerome Bell from OneUp auditioned on the tenth season of American Idol where he was eliminated in Las Vegas Round.