In today's Gallup Daily tracking poll (April 22-24), Obama leads Clinton by just 1 point. Clinton's 47% is her highest take of the month. Obama's dwindling lead since the beginning of the week is due more to Clinton's improved showing than to declining support for Obama. He's dropped just 2 points since before the Pennsylvania primary, while Clinton has shot up 7 points.

Obama 48 (-1 from yesterday)
Clinton 47 (+3)

Obama now leads by 9.0 points in the RCP National Average