Rick Perlstein sees no Republican doom in demographic inevitability.
Mark Mellman reminds that State of the Union addresses rarely affect the President's approval rating.
Carrie Johnson reports on Gallup's internal methodological review.
David Brooks ponders the rising philosophy of data-ism.
Elizabeth Wilner breaks down CMAG advertising data for the Senate and House.
John Sides offers reasons to study social science.
Michael McDonald updates 2012 turnout calculation to 58.2 percent.