Bob Martin is nearly a lock, Beth Leavel has a chance, and I would rule Sutton Foster out.
Stephen Lynch consideration? Yes, all actors are given consideration, but I don't think he'll snag a nomination. I think the best actor nominations will pan out to be:
Michael Cerveris, SWEENEY TODD
Alan Cumming, THE THREEPENNY OPERA
John Lloyd Young, JERSEY BOYS
Harry Connick Jr., THE PAJAMA GAME
Bob Martin, DROWSY CHAPERONE
The only person that might be iffy at this point is Alan Cumming, but we shall see what kind of reviews he gets. While his performance isn't up to par with his fellow potential nominees, he's certainly better than the likes of Hugh Panaro, Stephen Lynch, and John Strickland.
"If you are going to do something, do it well. And leave something witchy."
-Charlie Manson