Bruising Maryland Senate primary comes down to the wire for Democrats

A photo finish could be in store in Maryland this week as Rep. David Trone (D-Md.) and Prince George's County Executive Angela Alsobrooks (D) fight for supremacy in what has turned into potentially the bloodiest primary on the Senate map this year. 

Trone, the co-owner of Total Wine, had been buoyed for much of the race by his tens of millions in blanket advertising in an attempt to put him over the finish line. But that status has suddenly come into question as his lead appears to have evaporated into thin air.