Because we live in America most of what we do is still relatively unregulated ... at least compared to the rest of the world. So people still go around their everyday lives thinking more about what they and their families and their friends and their companies can do to better their lives.
Candidates and parties are still viewed as these abstract figures floating in the distance that may or may not have some real impact on their lives.
So people continue to vote, not their pocketbooks, but their guts as to who they feel more comfortable having a beer with.
City folks prefer seemingly erudite and urban Democrats.
It would be interesting to compare the votes of urban Jews, to suburban Jews, to rural Jews and see if there is any difference in voting patterns.
Such studies have already been done, if I am not mistaken, at least with respect to party registration by county and ethnic group. In general, where Jews live in a county that votes and registers more Republican, they themselves will vote and register more Republican. But they tend to be about ten percentage points or so behind the general population of the county in GOP registration, and about ten percentage points ahead of the general population in 'Rat registration.