This at first look seems like an outlier, but they are a good polling unit. Even with double the margin of error, this would still be a great result for Biden. Some interesting things in here:
https://poll.qu.edu/florida/release-detail?ReleaseID=3668
I think this is telling of how much of this is being driven by COVID:
Governor DeSantis receives a negative 41 - 52 percent job approval, a 31-point swing in the net approval from April when he received a positive 53 - 33 percent job approval rating. Today's numbers are the lowest for DeSantis since taking office in 2019.
It is also another poll that I think points out that the Hispanic vote is key the election. 19% of Hispanics voters say they don't have enough information to make an opinion of Biden. Biden needs to reach out to these voters.
There was another poll of Florida out today as well. It wasn't from as good a polling unit, but it shows Biden +6:
https://aarp-states.brightspotcdn.com/72/c9/01c98c584120ae7f7fbda9c914b0/aarp-florida-florida-politics-poll-july-13-14-2020.pdf