Kid Rock is an artist.
Kid Rock . His 1998 album Devil Without a Cause sold 14 million copies worldwide . After signing a recording contract with Atlantic Records in 1998 , he gained commercial success in the rap rock genre behind the singles `` Bawitdaba '' , `` Cowboy '' and `` Only God Knows Why '' ( the latter foreshadowing his move into country rock ) . In 2010 , he released Born Free , which featured an eponymous song that became the political campaign theme of Mitt Romney , the Republican nominee for President of the United States in the 2012 election .