President Barack Obama delivers a statement after meeting with Speaker John Boehner and Senate Majority Leader Harry Reid at the White House April 6, 2011 in Washington.

*Though majorities of blacks (85%) and Hispanics (54%) continue to approve of the job Barack Obama is doing as president, his ratings among these groups slipped in March and have set or tied new lows, according to a new Gallup Poll.

His approval rating among whites, at 39%, remains above where it was in the latter part of 2010.

These results are based on aggregated data from Gallup Daily tracking in March, including more than 15,000 interviews with U.S. adults. Overall, Obama averaged 47% approval in March, three percentage points above his term low from August 2010.

Obama, elected to office with strong support from minority voters, has averaged better than 90% approval among blacks, and 65% among Hispanics, during his term. Prior to March, Obama’s lowest monthly average among blacks was 88% in July 2010 and December 2010. The president’s 54% March job approval rating among Hispanics ties the low from July and August 2010.

Even with the decline in blacks’ ratings of Obama, blacks remain the most likely to approve of him among key attitudinal or demographic subgroups. Democrats (80%) and self-identified liberals (74%) are next. Republicans show the lowest level of support by a wide margin, at 14%.

In addition to the vast racial differences in views of his performance, Obama’s approval ratings continue to be more positive among the young than among the old, non-married than married, highly educated than less educated, lower income than higher income, and less religious than more religious.

The racial divide in opinions of Obama has been consistent throughout his presidency. The gap grew as large as 56 points last August (91% approval among blacks vs. 35% among whites). The current gap of 46 points is slightly lower, but still considerably larger than the average 34-point gap in the first five months of his presidency.