(CNN) — Barack Obama holds a 3-point lead over John McCain in the latest CNN poll of polls.
The new average of the three most recent national surveys of registered voters shows the Illinois senator at 44 percent with McCain standing at 41 percent. About 15 percent say they are undecided.
The margin between the two presidential candidates has dropped by half over the past week: in a CNN poll of polls taken July 16, Obama and McCain were separated by 6 points.
The latest poll of polls includes recent surveys from Gallup, Fox News, and NBC/Wall Street Journal.