John McCain and Barack Obama remain tied at 44%-44% for the second straight day in the Gallup Daily Tracking Poll:

Republican John McCain and Democrat Barack Obama are once again tied in the latest Gallup Poll Daily tracking presidential trial heat.

The results, based on a three-day rolling average of interviews conducted July 30-Aug. 1, show Obama and McCain each receiving 44% of the vote among registered voters. The candidates were also tied in Friday's update. Obama received a brief increase in support near the conclusion of his overseas trip last week, gaining a nine percentage point advantage in July 24-26 polling. But that bounce disappeared almost quickly as it emerged.