"DWTS" has top Monday audience but loses key demo to "The Voice"

ABC 's hit dance contest "Dancing With the Stars" drew the most viewers Monday night, but it lost its key demographic to "The Voice" on NBC.

According to The Hollywood Reporter, the all-star version of "DWTS" drew an audience of 14.6 million but only a 2.7 rating with those aged 18-49, a 33 percent drop from the season opener last fall. The two-hour premiere was followed by the murder mystery "Castle" that had a 2.6 rating among those under 50, a 22 percent drop from last fall

"The Voice" was down just 11 percent from last week to a 4.2 adults rating and drew 11.9 million viewers. It was followed by the second episode of "Revolution," which retained a healthy chunk of last week's premiere audience to earn a 3.5 rating with those under 50.

CBS ' comedy block opened with "How I met Your Mother," down 28 percent in the key demographic from last year's premiere. The block also included season openers for 'Mike & Molly," with a 3.0 rating, down 38 percent from last year, and "Hawaii Five-0" which dropped to a 1.9 in the key demographic.

The new sitcom "Partners" earned a modest 2.4 adults rating and the best comedy showing of the night went to "2 Broke Girls," which opened its sophomore season in the slot once occupied by "Two and a Half Men." It had a 3.7 rating. Overall, CBS averaged 8.4 million viewers.

On Fox, "Bones" drew a 2.2 adult rating, off just a tenth of a point from last week's opener. But the new drama "Mob Doctor" fell even farther from its lackluster premiere with a 1.3 rating . Fox averaged 5.6 million viewers.