Presidential election polls used to follow a predictable pattern: game the sample to make the R look like a sure loser in early polls; starting around September, increase the accuracy of the sample so the results are increasingly realistic (for CYA purposes). That pattern was shattered, intentionally because Orange Man Bad, in 2016. Consequently, polls should be taken with an adult-sized block of salt ... or simply ignored. I take the latter route, mostly, since MSM TDS has mushroomed.