Contrary to reports, Biden could still possibly win in November, although his paths to success... are limited.
My own inexpert analysis, indicates a slight narrowing of national polls to +0.3 points. 538 has the Trump lead widening to +3.2 points from last week's +1.9. Interestingly, the Trump increase seems to be at the expense of Kennedy. This may be due to changing polling methods.
Generally, polls do nationwide, with a full slate of candidates, then extrapolate the data to meet the state specific. However, with the focus on "battleground" states, many polls are becoming state specific. Therefore, the state specific poll will match with state ballot. In many of the "battleground" states, Kennedy is not on the ballot, therefore, is not on the poll.
In any case, Kennedy's polling has slipped from the usual 9.5%~10.5%, into the 8.6% range. That falloff, does match the Trump increase.
As for the nonsense of the democrats putting Kennedy on their ticket and easily beating Trump... that is overlooking the animosity of the dems regarding Kennedy. It would be a toss-up as to which they dislike more... Trump or Kennedy.