This Washington Post-ABC News poll was conducted by telephone August 19-22, 2008, among a random national sample of 1,108 adults and 916 registered voters. The results from the full survey and among registered voters have a margin of sampling error of plus or minus 3 percentage points.
2-way-race (Registered Voters)Obama - 49%
McCain - 43%
2-way-race (Likely Voters)Obama - 49%
McCain - 45%
4-way-race (Registered Voters)Obama - 47%
McCain - 40%
Nader - 4%
Barr - 4%
4-way-race (Likely Voters)Obama - 48%
McCain - 42%
Nader - 3%
Barr - 3%
Bush Approval Rating:Approve - 30%
Disapprove - 66%
Favorable Ratings of the Candidates:Obama - 62% favorable, 34% unfavorable
McCain - 59% favorable, 37% unfavorable
Favorable Ratings of the Parties:Democratic Party - 58% favorable, 36% unfavorable
Republican Party - 47% favorable, 49% unfavorable
http://www.washingtonpost.com/wp-srv/politics/documents/postpoll_082308.html