It Mason Dixon, knock 5 off the Dems rating and you are closer to reality.
C'mon, Mason-Dixon is pretty much the gold standard of polling firms. You might not like the results, but they have been pretty accurate and free of bias.
You want biased...then look to NYT/CBS polls on the left and Strategic Vision on the right.
This is good news, as GOP candidates are leading in TN and VA, which are must-win for the Democrats if they want to take control.
BINGO! The way to look at these polls is to knock 5 points off the Dems, add 5 points to the Republicans, then add another 2 points to the Republicans due to GOTV. And that's a CONSERVATIVE estimate.
I just need to REMIND everyone that the supposedly "scientific" exit polls in the last election showed Kerry winning in a LANDSLIDE.