Don't know about that. The Hedgehog Report reports fairly light turnout in the more Republican counties in the Baltimore area. That blog is by politically active Republicans (one of the nicest political blogs around. Many Ds read it and almost every commenter is civil and informative). Guess we will see soon.
Others are saying higher turnout in the Republican regions around Baltimore, while the liberal parts of the city itself aren't seeing such.
Who knows who is right at this point.