This is true on the coast, Deb, where Broadwings regularly linger from Cape May south into November.
As Microtus said, they're much rarer inland, with only one confirmed November eBird record in Tennessee in the past 10 years. Even on the coast, they rarely linger at places like Cape May (NJ), Virginia, etc. past November 15.
I'm really not sure why the eBird graphic you linked shows that! It's quite misleading.