I'll go with what Nate Silver said -- that the economic news this week was a bit of a plus for Barack Obama. Not so much that it was great, although it did push things his way a bit, but because it made economic disaster before November somewhat less likely, and if things stay as they are, he's probably a slim favorite.
What didn't matter? I don't know...how about the spike up in the polls for Obama in that Q swing states poll and then in Pew. I'm pretty skeptical about both. Toss 'em all into the pot, sure, but I'm not buying it, yet.
What else? What do you think mattered this week?