Even though we haven't seen any footage and can only go by what Cranston looks like in the film and the premise, this seems like the type of role that he could really excel in, and I think he could score his second Oscar nomination for this role.
By the way Cranston might be included in the awards conversation too if his film gets picked up for distribution here (Telluride Festival) where it is having its World Premiere , to be followed closely by Toronto. The film, written and directed by Robin Swicord , is the most mentioned acquisition title when I ask distributors which movie they want to see.
Saw it at TIFF today. Cranston was amazing. He had a psycho Jack Nicholson vibe and I loved every bit of it. Well made film too. Hope this gets a wide release soon.