Barack Obama has extended his lead over Hillary Clinton among Democrats nationally to 52% to 42%, the third consecutive Gallup Poll Daily tracking report in which he has held a statistically significant lead, and Obama's largest lead of the year so far.
The latest results are based on Gallup Poll Daily tracking conducted March 27-29. Obama did particularly well in interviewing conducted on March 29.
This marks the first time either candidate has held a double-digit lead over the other since Feb. 4-6, at which point Clinton led Obama by 11 percentage points.
According to tracking interviews from March 25-29, John McCain continues to hold a small 4-point lead over Clinton among national registered voters. McCain leads Obama by three points, 47% to 44%