This may be one of the most difficult presidential elections to predict in modern history -- or at least the history of polling. The election is one week away and the final stretch of the race has been hampered by Hurricane Sandy. The two fronts from the North and Midwest are predicted to create a "Frankenstorm" for at least two days this week in critical swings states: Virginia, North Carolina, Florida, New Hampshire and Pennsylvania.With a week to go, there are 146 electoral votes up for grabs in 11 toss-up states, including Colorado (9), Florida (29), Michigan (16), Nevada (6), New Hampshire (4), North Carolina (15), Pennsylvania (20), Virginia (13), Wisconsin (10), and Corn Belt states Ohio (18) and Iowa (6). Right now, Iowa and Ohio...