The new Gallup generic ballot is virtually tied up:
PRINCETON, NJ -- Gallup's generic ballot for Congress for the week of Sept. 13-19 shows a 46% Democratic and 45% Republican split in registered voters' preferences for the midterm congressional elections. It is the second week out of the last three in which the two parties have been virtually tied.
Take this for what it's worth. Individual races are really upside-down right now (see previous Feingold polling).