It is just one poll. One poll has the same amount of predictive power as a slice of bread.

Also, that being said, polls aren’t meant to be predictive, they capture the feelings of the people being polled, at that point in time. Trump’s legal woes are just beginning, he’s probably got another state indictment in Georgia coming in July and potentially a second from special counsel Jack Smith with regards to January 6th. There is still plenty of time and material to come that will sway people’s hearts and minds.