Plummeting response (oops, it's very early) rates define the current polling situation in the United States. Nobody even remotely close to me has ever even received a phone call, and my family lives in three states right now (one is Ohio). Today's fake-ass neck and neck poll from Gallup: Obama and McCain are tied, 14% response rate, 26% refusal rate.
Source: HuffPollstrology.
[I almost wish the betting line on Obama paid better, because I can't bring myself to bet on McCain.]