http://www.theobamanews.com/ObamaPolls/gallup-daily-72508-obama-by-6-is-there-a-europe-effect/ Barack Obama has expanded his lead over John McCain in the Tuesday through Thursday Gallup Poll Daily tracking rolling average, and now has a 47% to 41% advantage over his Republican challenger. Fri, 25 Jul 2008 14:33:26 CDT en