Posted: 5/28/15 at 5:59pm
As to how, both nominees received the same number of votes.
There have been several ties in Tony history:
Actress in a Musical (195 : Gwen Verdon, New Girl in Town and Thelma Ritter, New Girl in Town Featured Actor in a Musical (1959): Russell Nype, Goldilocks, and Leonard Stone, Redhead Musical (1960): The Sound of Music and Fiorello! Actress in a Musical (1962): Anna Maria Alberghetti, Carnival! and Diahann Carroll, No Strings Actress in a Musical (196 : Patricia Routledge, Darling of the Day and Leslie Uggams, Hallelujah, Baby! Costume Design (1977): Theoni V. Aldredge, Annie and Santo Loquasto, The Cherry Orchard Actress in a Play (1979): Constance Cummings, Wings and Carole Shelley, The Elephant Man Scenic Design (1980): John Lee Beatty, Talley's Folly and David Mitchell, Barnum Score (1993): John Kander/Fred Ebb, Kiss of the Spider Woman and Pete Townshend, The Who's Tommy Orchestrations (2009): Martin Koch, Billy Elliot, The Musical and Michael Starobin and Tom Kitt, Next to Normal https://www.tonyawards.com/en_US/history/facts/index.html