The film is not so much tone-deaf as old-fashioned, emerging from a more innocent time (say, three weeks ago) when politics as usual actually had some meaning.
Chastain draws us in, making us see what her lobbyist character keeps inside by the sheer force of her fireball performance.
Storytelling efficiency is one of Miss Sloane's most effective calling cards-that, and Chastain.
This is, in the end, not a sociopolitical tract but a movie, and one that unabashedly embraces the scintillating pleasures supplied in abundance on shows like "Scandal" to "House of Cards."
Chastain is scary, chilly, yet extremely likable as the hard-charging insider. In meetings and on the job, she has no filter, though as the movie progresses, the actress shows necessary cracks in her character's cold exterior.
Partly because "Miss Sloane" is more a character study than a coherent political drama, it fumbles the issue it purports to address, and it eventually runs aground in a preposterous ending.
Chastain fully commits to her boss-bitch persona, even if we only obliquely learn why she might have chosen such a lonely, mercenary life.
Here is Jessica Chastain flexing her extraordinary Meryl Streep-like range and just about keeping this convoluted political thriller in the realm of enjoyably watchable.
Why does Chastain still feel vaguely miscast, even as she commands the screen?