There's been no shortage of television commercials critical of the federal health-care law this year. In fact, various political organizations and campaigns have put more than $9.7 million has been toward criticizing the law over the airwaves in 2013, according to one tally.

The vast majority of the spending (nearly $9.4 million) has been directed at areas where between 15 and 30 percent of the population is uninsured. It's all according to a useful interactive map of all the spending from Kantar Media Intelligence/CMAG designed by Harley Ellenberger.

Charlotte, Cleveland and the District of Columbia have attracted the most anti-Obamacare ad dollars. The percentage of uninsured residents is above 15 percent in all three areas.

It's also worth noting that states where there are or were competitive statewide electoral campaigns have also attracted big money. Media markets in North Carolina, Kentucky and Arkansas, home to competitive 2014 Senate races, are at or near near the top of the list. Virginia, where there was a competitive 2013 gubernatorial race, also has a big presence near the top of the list. Mobile, Ala., where a heated Republican congressional primary was recently decided, has also attracted a lot of ad dollars. In all these races, Obamacare emerged as substantial focus.

(Bear in mind that advertising costs depend on population. Airing a 30-second commercial in Missoula, Mont., for example, is much less expensive than running the same spot in Philadelphia or New York.)

What else do you find interesting about the map and its findings? The comments section awaits your input!