Originally Posted by Retspin
I prefer WITN for news though I live in Wilson, another DMA. Greenville is just as local to me as Raleigh and I remember WITN providing coverage of the Wilson tornado on the evening it happened a couple of years ago. WRAL ignored Wilson that night and focused on the tornados in the Triangle area. I wonder how these DMA lines drawn up anyway?
DMA lines are not drawn arbitrarily. Counties are included in one DMA or the other because of viewing patterns.
For example, for Wilson County to be moved back into the Greenville market, the total sign-on to sign-off audience of all of the Greenville stations would have to exceed the total for all of the Raleigh stations for a period of time (I believe this is one or two years). It's tough for a station to make a push for a DMA change, when the others don't cover a particular area.
This system has been around since the creation of television, so don't expect it to change.