New NBC/WSJ poll of registered voters (Oct 17-20) shows Barack Obama leading John McCain by ten, which is a four point gain for Obama over the last two weeks:

Obama 52 (+3 vs. last poll Oct 4-5)
McCain 42 (-1)

Obama leads by 7.2% in the RCP National Average.

UPDATE: Ipsos/McClatchy is also out with its weekly survey of likely voters (Oct 16-20) showing Obama with an eight point lead, 50 to 42. One week ago the poll showed Obama leading 48 to 39. The RCP National Average remains at Obama +7.2.