Obama Builds Big Lead on Hillary Nationally; Tied in Texas

A new CBS News/New York Times poll finds Barack Obama with a 16-point lead over rival Hillary Clinton among Democratic primary voters nationwide.

Obama, coming off 11 straight primary and caucus victories, had the support of 54 percent of Democratic primary voters nationally. Clinton had 38 percent support.

In a CBS News poll taken three weeks ago, shortly before Super Tuesday, Obama and Clinton were tied at 41 percent. Clinton led by 15 points nationally in January.

The former first lady has lost her advantage among women, according to the poll: The two leading Democrats now have even levels of support among female primary voters.

Men, meanwhile, disproportionately favor Obama. He leads Clinton among male Democratic primary voters 67 percent to 28 percent, and leads among white men 61 percent to 33 percent.

In the CNN/Opinion Research Corp. survey released Monday, 50 percent of likely Democratic primary voters said Obama is their choice for the party's nominee, while 46 percent backed Clinton. But taking into account the poll's sampling error of plus or minus 3.5 percentage points for Democratic respondents, the race is a virtual tie.

Clinton had a statistically insignificant 50 percent to 48 percent edge over Obama in last Monday's CNN/ORC poll in Texas.

"The 2-point gain for Obama and the 4-point drop for Clinton are both within the poll's sampling error, so although the survey appears to indicate some movement toward Obama, we cannot say for certain that he has gained any ground since last week," said CNN polling director Keating Holland.

Two recent polls by other organizations also show the race statistically even