This. If there are more Democrats than Republicans, more Democrats will appear in the sample. That's how polling works. Apparently, this is another skill that the Trump Cult is lacking.
That is true if polls could be a truly random sample, but that is impossible. They do stratified random samples where people are called in designated areas to insure proper representation of various groups. The higher percentage of Democrats is built into the sample.
Some of the polls use the same raw data but differ in the results based on how they handle issues like likely voters, registered voters, etc.


