It's too bad they don't disaggregate the data by state, instead assuming states which voted particular ways are equivalent. I guess that the Benford Law analysis wouldn't be as easy if they did due to the fewer number of counties to analyze per state?

So I wish they had instead grouped counties by how they voted (since certifying votes is done on the county level, typically), and run the analysis that way.

I'd also like to see an analysis based on county size (by population density, and by absolute population). As you get non-random effects based on density.

It's also interesting that in certain cases they use a 10%-level for confidence.

Edit to add a question: Does the registered voting population of these districts follow Benford's Law?