Americans are sharply divided by race ahead of the first presidential election in which a black candidate will represent a major party, a New York Times/CBS News poll showed on Tuesday,
In the survey, 83 percent of blacks had a favourable opinion of Obama, compared with 31 percent of white voters.
Obama will face John McCain, a white Republican senator from Arizona, in the November 4 presidential election.
On the status of race relations, 59 percent of black respondents they were generally bad, compared with 34 percent of whites who thought the same way.
The nationwide telephone poll of 1,796 adults showed that 39 percent of blacks said there had been no real progress in recent years in getting rid of racial discrimination. Only 17 percent of whites said the same thing.
Twenty-seven percent of whites said too much had been made of problems facing black people, while half of blacks said not enough had been made of racial barriers faced by black people.
The poll was conducted July 7-14 and had a margin of error of plus or minus three percentage points.
Source: JoAnne Allen; Editing by John O'Callaghan