Kilgore Backing Giuliani
This is an interesting pick because Kilgore was beaten pretty badly two years ago, and even upset some Republicans with refusing to take a hard stance on abortion.
I assume the theory here for Giuliani is that he is an urban/suburban style candidate, so adding rural Kilgore could help him in western Virginia.
I think this is a terrible plan, since Giuliani isn't going to gain the nomination by going after the socially conservative rural voters. He will win by promoting leadership abilities to places like NOVA that will be receptive to his experience and moderate social views. Making Kilgore his mouthpiece to the state will be a grave mistake; as Kilgore will drag Giuliani's support in the areas Rudy already has the best chance of performing well in.
As for the rural areas, Giuliani will have no chance due to his pro-gun control stances and other generally socially moderate/liberal beliefs. Rural Virginia is not in play for Giuliani no matter who his campaign chair is.