NBC's "The Voice" results show dominated FOX's "American Idol" performance/results hybrid; the latter posted a series low rating.

Update: Final broadcast data confirms that Wednesday’s “American Idol” was the lowest-rated and least-watched installment ever. It drew a series low 1.4 adults 18-49 rating with 6.58 million viewers.

An episode of FOX’s “Idol” had never before gone below a 1.5 in the adults 18-49 demographic or 6.76 million in total viewership.

In addition to confirming the series low outing, final broadcast data reveals that NBC’s hourlong “The Voice” results show dominated the “Idol” Top 8 performance/results hybrid.

“The Voice” drew a 2.2 rating with 9.64 million viewers in its timeslot. Weak by usual “The Voice” standards, the numbers look spectacular in comparison to the 1.3 rating and ~6.0 million viewership average “Idol” posted in the competitive 8-9PM hour.

CBS’ “Survivor” ultimately topped both music reality shows Wednesday night. It drew a 2.5 with 9.84 million viewers from 8-9PM.
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Earlier this season, a “The Voice” clip show tied an original edition of FOX’s “American Idol” in the adults 18-49 demographic.

Is it at all surprising, therefore, that this Wednesday’s “The Voice” results show dominated the Top 8 “American Idol” performance/results hybrid show?

Per fast national data, NBC’s hourlong “The Voice” drew a 2.1 adults 18-49 rating with 9.54 million viewers. FOX’s “Idol” drew a paltry 1.3 adults 18-49 rating with 5.99 million viewers in the competitive 8-9PM hour.

The second hour of “Idol” aired without opposition from “The Voice,” and it naturally drew improved marks. That hour’s 1.5 adults 18-49 rating and 7.06 million viewers were nonetheless poor by the standard of the show and down from the 1.8/8.72 million drawn by the corresponding hour last week.

Wednesday’s “Idol,” which also featured performances from Jason Derulo, Florida Georgia Line and Iggy Azalea & Jennifer Hudson, ultimately averaged a 1.4 adults 18-49 rating with 6.52 million viewers in the fast nationals. If those numbers hold in the finals, they will rank as series lows for “Idol.”