Who'll win a Tony for best actress in a musical?Again, the ''Amour,'' ''La Mancha,'' and ''Movin' Out'' stars get the shaft: Errico was lovely; Mastrantonio was a strong Aldonza; and Parkinson, she of the Nicole Kidman-like looks, is a jaw-dropping dancer. But this race -- probably the toughest to call -- is all about Peters and Winokur (pictured above). There's no Broadway leading lady more cherished than Peters. This is her seventh nomination -- she's won for ''Song & Dance'' and ''Annie Get Your Gun'' -- and she's got a Tony-winning role if ever there was one (Angela Lansbury and Tyne Daly previously took home trophies for playing Mama Rose). Yet Winokur is this season's It Girl. Just as ''Hairspray'''s Tracy Turnblad takes Baltimore by storm, so does Winokur. She's bubbly, she's beautiful, and this is a role that was made for her.