Though much attention is focused on the presidential election more than a year away, seven states have major elections in 2015.
The Center for Public Integrity is tracking the political TV ads that are shaping those races.
More than $28 million has been spent to air ads so far. Here’s where some of that money went:
Sources: Center for Public Integrity analysis of Kantar Media/CMAG data through Oct. 5; U.S. Census/Bureau of Labor Statistics Current Population Survey.