"Red Wave Polling Tsunami"
Right now both the national and the swing state polls are loaded up with Red Wave polling. The net effect is to bring down Harris and make it appear even or in some cases Trump leading. This gives rise to dozens of articles about Trump's increasing strength, which is the purpose.
The best advice is to ignore the averages and look at only "high quality polls" which consistently have Harris up 4 to 6 nationally, and leading in the swing states.