Many of you have wondered about this. Maybe this will help.
NYT—“Liz #Cheney, who cont’s to describe #Trump as “unstable” & “depraved,” decided that Sept will be her moment to weigh in..when early voting has begun & her voice will not be lost in sea of back-to-back convention speeches.
Her objection to speaking in Chicago was almost entirely about timing.. It was a polit calculation—which some of her allies disagreed w—abt when she could maximize her impact on outcome of the race”