The chart shows how these three main predictions have shifted during the course of the year. Obama had a small spike when Osama Bin Laden was captured, but otherwise he’s been on a slow decline for most of the summer and early fall, with a slow resurgence in the late fall and early winter. The Senate has been relatively steady with small spikes corresponding to shifts in specific seats, including retirements and announcements of new candidates. The House has shown the most flux with a steep decline that mirrored the President’s, but continued longer into the fall. Yet, it has taken a sharp turn towards the Democrats in recent weeks:

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