NPR ran a story over the weekend on Wood County, Ohio, a county with 125,000 residents that has picked every president since 1960 with the exception of 1976.

Not surprisingly, the residents of Wood County have been the recipients of a lot of attention from both campaigns, including via the airwaves.

According to an NPR correspondent, one attack ad in the TV blitz has been particularly effective in Ohio.

This ad hammers Mitt Romney for his Bain past--specifically, the shutdown of a paper plant in Marion, Indiana. The first-person story told in the ad has so resonated with voters that the ad has been viewed more than 2 million times on YouTube. According to NPR, a startling percentage of these views have been in Ohio.

The Romney campaign has blasted these sorts of ads as generally misleading, but has not commented on this one in particular.

Here's the ad: