U.S. Senator Barack Obama's lead over Senator Hillary Clinton in the race for the Democratic presidential nomination widened again, according to a new Gallup poll released Monday.
Obama led Clinton 52 percent to 43 percent and his lead has expanded to 9 percentage points from 3 percentage points in last Gallup poll.
He has now led in 16 straight Gallup polls -- by margins as much as 10 points and as little as one point.
The latest results are based on surveys of 1,240 Democrats and voters who "lean" Democratic April 4 -6.
In another Gallup survey among 4,380 registered voters April 2-6, Senator John McCain, the Republican presumptive presidential nominee, remained tied with his two Democratic opponents.
McCain and Obama are deadlocked at 45 percent each.
The hypothetical matchup of McCain vs. Clinton, are also unchanged, with McCain ahead 47 percent to 45 percent.