http://www.vulture.com/2014/05/ratings-bad-night-for-american-idol-the-voice.html

“The Voice’s” ratings last night were way down from the last two seasons, while “American Idol’s” final performance show was watched by just 6.6 million, which as Josef Adalian notes was "the least-watched episode in the show’s history. Not the least-watched finale, but the least-watched episode, period, going all the way back to when the show was an infant in 2002, and (some) real human beings voted for Justin Guarini instead of Kelly Clarkson."
Read more at http://www.hitfix.com/tv-tattle#3gXbzp6Xl7m6rsgY.99