A new Battleground Poll from the Tarrance Group (R) and Lake Research Partners (D) shows John McCain with a 1-point lead over Barack Obama among likely voters with leaners. The poll was conducted August 10-14 with a sample of 1,000 LVs and margin of error of +/- 3.1%:

McCain 47 (nc vs last poll in May)
Obama 46 (-3)
Undecided 7 (+2)

Obama's lead in the RCP National Avg continues to slide, down to just 1.2%.