By EW Staff
June 01, 2013 at 03:07 PM EDT

It appears the waning interest in American Idol has taken a toll on the traditional summer tour of finalists: 19 Entertainment has eliminated nine concerts in its North American tour.

Cities affected included Las Vegas, St. Louis, Detroit and Oakland, among others. The tour was originally set to begin on June 29; now it’s been pushed to July 19, according to The Hollywood Reporter. The Idols will now perform in 30 venues nationwide.

The 12-year-old reality franchise was down 23 percent to 15.2 million viewers for its Wednesday night performance shows this year, and has gone from the No. 1 show to a mere Top 5 show. Three of the judges have already announced their departures — Randy Jackson, Mariah Carey, and Nicki Minaj.

Fox’s entertainment chief hinted in May that the show may return to a three-judge panel.