Sweden uses a national vote system and it's evident how virtually all of the campaigning takes place in Stockholm. No one bothers with the rural areas.
If a popular vote system came into effect in the U.S., the campaigning would concentrate on swing areas, and on the bases for both sides.
Which means that it's not going to be all urban campaigning in the U.S., because Republicans can't win most urban areas, and they'd need to keep the turnout high in their base areas.
Depends how thee defines urban though, doesn't it? A bumpkin/hick, such as myself, would probably tend to view everything in a metropolitan area as being urban.
