Gallup Daily: Obama Opens Up 16-Point Lead, Biggest Yet

Yikes, that's a serious spread. I couldn't get the graph to load for some reason, so click on the link to see it.

PRINCETON, NJ -- Gallup Poll Daily tracking finds Barack Obama with his largest advantage over Hillary Clinton in Democratic voters' nomination preferences thus far, 55% to 39%.

Obama's previous largest lead was 11 percentage points, in May 15-17 and April 12-14 polling. His widening lead over Clinton has been evident in each of the last three days of tracking, after the two had been more closely matched earlier in the month.

Clinton's largest lead in the Gallup Poll Daily tracking was 20 points in mid-January, when she led Obama 48% to 28% (John Edwards was still in the race at that time). (To view the complete trend since Jan. 3, 2008, click here.)