[cnn-photo-caption image= http://i.cdn.turner.com/cnn/2008/images/04/29/art.split.gi.jpg caption="Obama and Clinton are locked in a dead heat."]
(CNN) - For the fifth straight day, Barack Obama and Hillary Clinton are statistically tied in Gallup's national tracking poll, the latest indication the Democratic stalemate shows no signs of ending four months after the primary season began.
Clinton holds a one point lead over Obama in Tuesday's tracking poll - a statistical tie, given the poll's 3 point margin of error. In the last five days, the two candidates have either been exactly tied or separated by only one point.
That trend marks a clear departure from the weeks before the Pennsylvania primary, during which Obama almost consistently held a wide lead over Clinton. Meanwhile, the five-day tie is one of the few times all year in which the two candidates have been deadlocked for more than two days.