
Nate Silver @NateSilver538
To the extent there's been tightening in national polls, it's been from Trump clawing away at undecideds. Biden is essentially unchanged from his peak at ~52, but Trump has improved from a nadir of 41.7 to 43.5 now. https://t.co/3bJ4MsGDJ4 — PolitiTweet.org