(Xinhua)
Updated: 2008-10-07 10:51

WASHINGTON  -- US Democratic presidential candidate Barack Obama is moving further ahead in all national polls Monday in the wake of economic downturn and financial crisis.

Republican presidential nominee Senator John McCain (R-AZ) (L) and Democratic presidential nominee Senator Barack Obama (D-IL) stand together onstage after the first US presidential debate in Oxford, Mississippi in this September 26, 2008 file photo. [Agencies]

The latest CNN survey found Obama now leads McCain 53 to 45 percent, doubling the 4-point lead Obama held in the last CNN poll in mid-September.

The Gallup daily tracking poll also show Obama leads by 8 percent, with 50 percent of the respondents supporting him and 42 percent supporting McCain.

In all other national polls, Obama's leading margins range from 6 to 8 percent.

Pollesters said the Obama's gains could be attributed to the financial turmoil, record-low approval ratings for Republican President George W. Bush and a drop in the public's perception of Republican presidential candidate John McCain's running mate Sara Palin.