Surely you must be kidding or else you are simply putting out feelers to see if anyone will tell you the truth.
"Urban centers" are, for the most part, inhabited by minorities. Minorities vote Dumbocrat. Case in point: Washington, D.C. voted in the 90% range for stupid.
The other "urban centers" are not as "minoritized" as D.C. so the percentages will fall but still be in the high percentile.
Its not that cities have minorities, its that minorities are easier to keep dependant on corrup gov't, which is tied to union thuggism and mafia ties. In other words, escape is discouraged.