Gallup Daily: Obama Stretches Lead to 8 Points

PRINCETON, NJ -- The latest Gallup Poll Daily tracking finds Barack Obama moving to an eight percentage point lead over John McCain, 49% to 41%.

Obama's significant lead over McCain almost certainly reflects the effects of the Democratic National Convention. The two presidential candidates were tied at 45% in the last Gallup Poll Daily tracking results conducted entirely before the convention began. The latest results include interviews from Tuesday through Thursday night, though most of the interviewing was conducted before Obama's acceptance speech late Thursday.