My heart is hoping that Miles will win it. It is rare to have such a great role for Asian-American actresses on broadway, but more than that, she was phenomenal. It's such a powerful and nuanced take on the role, a role that could very easily veer into "villain" territory because the audience is primed to root for Anna.
However, given the momentum for FH and Kuhn, and the emotional and impactful subject matter, it may just be the year for her. I'm pretty sure the votes for Skeggs and Lucas will cancel each other out, leaving Kuhn to edge them out by a bit. With votes split among all 3 FH ladies, it's unlikely that Miles will prevail.
This will be a very close one (just like the race for Leading.)