Political TV ad spending is huge this cycle, but the real blanketing has only affected nine key swing states. From the AP:
Colorado, Iowa, Nevada, New Hampshire, North Carolina, Ohio, Pennsylvania, Virginia and Florida, the largest and most diverse of these highly contested states, are where the ad dollars have been concentrated, and that’s been consistent this election season. They account for 120 of the 270 electoral votes a presidential candidate needs to win. Barack Obama carried all nine states in 2008 when he beat Republican John McCain, but polling and the ad crush indicate all are highly competitive this time.
Detailed poilling for all the states are available in PollTracker.
