Don’t have time to watch the video, but Amy Poehler is “the” Hillary Clinton impersonator in my mind. That’s probably mostly just because of how long she played the role on SNL – and during a period when I saw more SNL than I do now – but I also think she did a more accurate version of Hillary than Kate McKinnon.
Kate McKinnon is very funny though, and during the debate I found myself already looking forward to a debate sketch with McKinnon-as-Hillary grinning maniacally in the split screen while Trump blathers away.
I feel like McKinnon’s version of Hillary isn’t so much supposed to be an authentic impression of Hillary’s public persona but more a take on what the “inner Hillary” that she’s keeping under control might be like.
I’d have to pick Amy Poehler, mainly on the strength of her appearances opposite “Sarah Palin”, i.e. she portrayed Clinton as very intelligent but increasingly (and comically) frustrated by the idiots around her.