Chicken or egg? Different crime stats in different Arizona counties

Small Dead Animals notices something interesting:  the crime stats in Sheriff Dipstick’s county, as compared to Sheriff Arpaio’s county, are appalling.  Appalling that is, assuming you’re a law abiding citizen and not a criminal.  If you’re a criminal, they’re pretty darn good.

My only question is whether the lousy sheriff caused the bad stats, or whether the community is a loopy loo liberal land that would naturally elect someone who couldn’t be tough on crime if his life depended on it.  I.e.:  bad sheriff or bad voters?