Survey shows number of undecided U.S. voters dwindles

U.S. Republican presidential nominee Senator John McCain (R-AZ) speaks at a campaign rally in Newport News, Virginia  Nov. 1, 2008.(Xinhua/Reuters Photo)

The portion of undecided voters have shrunk from 30 percent at the start of the campaign in May to 26 percent before the conventions, 19 percent after and on to its single-digit level now.

Obama, meanwhile, continues a steady lead in vote preference, built in no small part on the preference of those early voters.

Overall, among all likely voters, Obama continues to lead McCain by 53-44 percent, while early voters favor Obama by a broader 59-40 percent.

In terms of party affiliation, the gap between Democrats and Republicans among likely voters has reached 10 points, matching its average among all Americans in ABC polls this year.

It is up from an equal Democratic-Republican split in partisan allegiance in 2003.

Editor:Du Xiaodan