Do you do the calculations yourself? What other factors do you use?

How are "core" and "legacy" voters defined? Which/how many counties were used as a sample size in order to make these calculations? How does it account for the fact that liberals and conservatives are not equally distributed through the country?

Does it take into effect the aging population and the fact that older people are historically much more conservative than younger people? Considering that we have the youngest part of the largest generation ever now at retirement age and older, and the highest mortality rates for conservative voters, that seems like it should be taken into consideration.

What about the changes that covid and work from home caused in the demographics? Many people moved out of cities (more likely blue) and into suburbs and the countryside (more likely purple or red) when the pandemic hit. A good deal of them are still there, hence all the complaints about people moving into red states, trying to turn them blue. All this has happened since the last election, so there won't be any voting records that would reflect this. This could potentially affect swing states if large numbers of democrats moved there during/after the pandemic. And judging by how many people are complaining about being overrun by liberals moving in, it's not beyond possibilities.

From what I understand, the counties exceeding 100% of registered voters were due to same day registration voters.