I don't suppose anyone can easily calculate what %age of counties in the US are...?
Clinton/Clinton
Clinton/Sanders
Obama/Clinton
Obama/Sanders
That would be great. Kalwejt's thread has a county map of Obama/Clinton and so on (though not updated for the 6/7 primaries).
In the meantime, here's the state map:
Red = Obama/Sanders
Green = Obama/Clinton
Yellow = Clinton/Sanders
Blue = Clinton/Clinton
32% of states are Obama/Sanders
26% of states (plus DC) are Obama/Clinton
12% of states are Clinton/Sanders
30% of states are Clinton/Clinton