Oscars’ TV audience dropped to 26.5 million — an all-time low

ABC’s telecast of the 90th Oscars was watched by 26.5 million viewers on Sunday, the smallest TV audience on record for the ceremony.

The average audience for the broadcast was down 19.5% from last year’s 32.9 million viewers and under the previous low of 32 million viewers in 2008, according to…