The government shutdown did not happen by accident. It is the latest manifestation — an extreme one by any measure — of divisions long in the making and now deeply embedded in the country's politics.

At some point, presumably, the current standoff will end. The federal government will reopen, the ceiling on its borrowing power will be lifted and some stalled legislation could pass. Some sense of normalcy will return to official Washington.

But it also could be a new normal, as confrontation remains commonplace and true compromise rare. Meanwhile, the ideological, cultural and political differences that led to this moment of extreme governmental dysfunction are almost certain to shape elections and legislative battles in the near term.