These are the same people who were reporting that H.R. Pufnstuf Clintoon had the White House in the bag a year prior to the 2016 elections.
Reported as such, it’s nothing more than the medias “power of suggestion”. Tell them what you want them to hear.
The rats and the media use polls to discourage competition and mobilize their own base. Polls should not be news. They’re made up.