Jst wondering..if the race is really only in 10 or less battleground states..I assume the release of national poll showing W with a big lead, like this one..will give W a bump in the battlegroudn states..can this be quantified?
I doubt your premise can be quantified, and I further do not know if it is true. Nationwide horserace polls could develop a bigger lead by increasing the margin of victory in states already locked while leaving battleground states in dead heats. It is statistically possible, anyway.