15% of Americans to cut the telephone cord by 2009

Merely 3% of Americans use a cell phone as their only phone today. But Yankee Group predicts that by 2009 as many as 15% of American adults will have cut the cord. If that happens, pollsters would face the frightening proposition that more than one in seven adults would have zero probability of being included in a sample. If that scenario plays out, it could put a serious dent in the fundamental statistical basis of national polls.