Assessing where the red/blue political line lies in swing states and how it is shifting

Democratic-leaning urban areas in states that otherwise lean Republican is an increasingly important phenomenon in American politics, one that will help shape elections and policy for decades to come. Blue Metros, Red States explores this phenomenon by analyzing demographic trends, voting patterns, economic data, and social characteristics of twenty-seven major metropolitan areas in thirteen swing states that will ultimately decide who is elected president and the party that controls each chamber of Congress.