Las Vegas has the most political ads on TV, according to Political Ad Sleuth, with more than 2,300 files in our database. If you just look at Senate ads, though, the No. 1 spot goes to Pennsylvania, which has Sen. Bob Casey, Jr. (D) facing challenger Tom Smith.
Political Ad Sleuth, a project of the Sunlight Foundation and Free Press, is just one week old and already the amount of political ads on TV are hitting record numbers. Be sure to check out how your local media market ranks.