Alright, it's been about 4 weeks since the last polling update. Nationally, Biden is at +9.1 when he was at +8.3 at the very end of July. So this includes Harris as his VP and a possible convention bounce. It's still ridiculously high but let's take a look at the swing state movement since that's really what matters.
AZ: Biden +4.3, was +3.9. There's a lot of variance in AZ polling. The last A rated poll as done prior to the convention and had Biden +7.
FL: Biden +5.6, was 6.0. Polling here is a bit more consistent but not of high quality. It's notable that Biden never gets above 50% in these polls so it seems that there are a lot of undecideds
GA: Trump +0.4, was Trump +1.2. Hardly any polling, but the polls are high quality here. This truly is a tossup at the moment.
IA: Trump + 1.0, no polling since end of July
MI: Biden +7.3, was +8.1. The trend here is definitely tightening over time. Very volatile polling but Biden has a very consistent average. The change is due to Trump getting a bit more support from undecideds. It doesn't matter if Biden is consistently at 50+% though.
MN: Biden +5.7. This is a
new state that I'm adding because polling indicates that this will be close. Originally, this was a massive blowout state so I didn't include it. Expect a lot more polling to be done here.
NH: Biden +9.1, was +9.3. Only one blowout poll here for Biden.
NV: Biden +7.9, was +6.6. Again, no polling, strictly based on the national average.
NC: Biden +1.8, was +2.0. Similar to Georgia in that this is a true tossup but it's slightly bluer.
OH: Trump +0.3, was Trump +0.4. Only one poll that said the race was even.
PA: Biden +5.8, was+ 6.6. LOTS of polling here and definitely tightening over time. Basically the same thing as Michigan except slightly redder.
TX: Trump +0.9, was Biden +0.6. Not much polling here...but the polls are strange. They cluster into 2 very different groups and my gut tells me it's the group that has Trump winning by 5+. I feel like Texas is a trap for Biden in terms of campaigning. There's absolutely ZERO reason for him to campaign here b/c it would only run up the score. Focus on down ballots here as opposed to the presidency.
WI: Biden +6.2, was Trump +7.1. Another race that's seeing tightening with lots of polling. Basically between MI and PA in terms of "redness."
Updated map:
https://www.270towin.com/maps/WoN4W