Polling 101: never extrapolate anything or use them for forcasting.
Their purpose is to determine demographics to focus on in a campaign, not as a tool to project likely outcomes. Especially in a field with 5-6 viable candidates, they're functionally worthless as anything other than a tool to study demographic needs and a post-hoc analysis to show where campaigns missed trendlines in key demos. But people constantly use them to forecast because Nate Silver thinks there's some golden unbiased and plain to see electoral math when that's just not how any of this works. Data is never neutral, because people can interpret it based on their own notions and values, always remember that.
Most polling has 40-45% of people at this point who literally answer "no preference", they're junk for forecasting at this juncture.