Arrowverse's "Crisis on Infinite Earths" kickoff was slightly down from last year's "Elseworlds" premiere

TVLine

The first of the five-part crossover attracted 1.67 million compared to 1.83 million for the 2018 "Elseworlds" premiere. “Crisis on Infinite Earths” did, however, boost The CW's demo ratings for Supergirl's timeslot.