There's a lot to understand better about the initial map.
For one thing, I don't get how a very thinly populated area of California, opposite the Nevada border N. of Vegas, can be so brightly lit up.
Ohio is more populous than Indiana, 11.5 mil to 6.5 mil. On your density-by-county map, Ohio has 11 dark blue counties, Indiana has 5. The percentage unemployment rates for Indiana and Ohio are now similar enough: Indiana 8.1%, Ohio 7.3%. Or, to look back a little, in 2009 Indian 10.4%, Ohio 10.2%. It pretty much has to be that Indiana doesn't light up because there aren't as many people.
Visually striking map, to be sure. Makes you think.
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