'The Voice': Blake Shelton and Gwen Stefani Go to War Against Each Other (Exclusive)

Blake Shelton and Gwen Stefani battle it out for the first time as a married couple in a new promo for season 22 of 'The Voice.' The pair isn’t holding back, as they go head-to-head just two years after Gwen's season 19 win. Season 22 of 'The Voice' premieres Sept. 19 on NBC.