The 9 battleground states are so diverse that movement among demographic could change the election.
Obama is struggling in states where he was most dependent on support of whites--except for Ohio.
The Humane Society is spending most of its political money this year on a single cause: Unseating Rep. Steve King.
Democrats appear poised to capitalize on their registration advantage in Nevada, making Romney's route to victory much more difficult.
Republicans can overcome Democratic early voting efforts on Election Day.
Although Ohio is close, Obama's lead is relatively clear.
And PPP had surprising results in New Hampshire and Iowa.
The nine battleground states aren't created equal -- Romney and Obama are stronger in some than others.
The combination of Wisconsin, Iowa, and Ohio is enough to reelect the president.
Depending on how you look at the ad data, there's a case that Romney's on the offensive or just desperate.