Is it how the biggest and the smallest county voted?
Yes, congrats.
Red - Biggest and smallest county voted for Obama
Blue - Biggest and smallest county voted for Romney
Green - biggest county voted for Obama, smallest county voted for Romney
Gold - Biggest county voted for Romney, smallest county voted for Obama
Interesting dynamics in a lot of these states, especially in Colorado, Maine, Wisconsin, Minnesota, and the south.
Also I used 2010 census for the populations.
I thought Rockingham County, NH were bigger than Hillsborough County, NH. That's why didn't solve the problem straight off.
And I didn't know either that El Paso County is more populous than Denver.