Bulworth-type moments in the film, where he repeats the same speech over and over again, to camera or to an empty room, practicing. Normal people can't do that without being self-concious, but politicians can.
The thing about Weiner is that he's disgraced and fails because of a character flaw, and by the standards of American political life it's a small one. He 'sexts' pictures of his bulging underwear to a young woman that he's never met, and she senses the opportunity for celebrity and feeds him to the media. He didn't touch her, he didn't hurt anyone - they never even met, except online. He didn't embezzle, he didn't cheat on his wife, who by the way is a bigger political operator than him and close to Hillary. At one point in the film she's apparently faced with the choice of dumping him or losing her own political career, and it's not clear which way she is going to go.
Ultimately he's a big loser, the more so because his insight into his situation is lost in the face of innappropriately dogged resolution to go on no matter what. It's an over-used metaphor, but it is a bit like watching a car crash in slow motion. As the audience we know how this is going to go, but he can't or won't.
Watched via Chromestream and Chromecast, shortly before a Windows 10 update trashed my laptop.