Maryland’s most anticipated congressional race, a rematch between Rep. David Trone (D) and Del. Neil C. Parrott (R), remains uncalled as of Wednesday afternoon, and it may be a while before results are known. Thousands of mail-in ballots are outstanding in counties across the district, chief among them Montgomery County — a key blue territory that favors Trone — and Frederick County, purple territory where the candidates have been neck-and-neck. Spokesmen in elections offices in those counties said officials will not resume counting the remaining ballots until Thursday and will not have an update on the count until Thursday night.
