A super PAC backing Republican presidential candidate Mitt Romney says it's spending $1 million on radio ads in nine states.
Restore Our Future plans to put the 60-second ad on the air in Colorado, Florida, Iowa, Nevada, New Hampshire, North Carolina, Ohio, Pennsylvania and Virginia. In it, a female narrator says President Barack Obama has no record to run on and has resorted to negative attacks on Romney.
The group is an independent committee run by former Romney aides.
For his part, Romney has not spent heavily on radio ads and his advisers say they have none running at the moment.
Obama has been airing ads aimed at promoting his record to rural and Hispanic voters.