The latest from the Gallup Daily tracking survey of Democratic and Democratic leaning voters nationwide:
Barack Obama has now cut the gap with Hillary Clinton to 6 percentage points among Democrats nationally in the Gallup Poll Daily tracking three-day average, and interviewing conducted Tuesday night shows the gap between the two candidates is within a few points.
Go read it all, but in this case, the picture tells the story:
See my post from Monday for more details on this new Gallup tracking survey.
Update: Andrew points out in the comments that the Rasmussen automated daily tracking survey shows no gain for Obama over the last week. However, the Gallup trend brings the two surveys into closer agreement on the Democratic race now than ten days ago. On January 20, they reported Clinton leading by just four points (38% to 34%), while Gallup had Clinton ahead by 20 (48% to 28%). Clinton now leads on the Rasmussen survey by nine points (41% to 32%).
Back in April 2007, when Rasmussen's surveys were showing a closer race than other national polls, we looked closely at the potential reasons for the difference. One important issue is that Rasmussen's methodology effectively samples a narrower segment of the population. Whether that difference makes it better or worse in this context is a point of debate.