National Super Tuesday poll shows dramatic Democratic shift - CNN.com

National Super Tuesday poll shows dramatic Democratic shift - CNN.com: "Democratic Sen. Hillary Clinton is losing ground to Sen. Barack Obama in a national CNN/Opinion Research Corp. poll released on the eve of critical Super Tuesday presidential primaries and caucuses.

The two are virtually tied in Monday's survey, which shows the New York senator has lost a comfortable national lead she's held for months over Obama and other rivals.

The survey also shows Arizona Sen. John McCain as the clear Republican front-runner."