A head to head comparison of the Maryland 2016 General Election gives us an idea of the break down of the voters.
Chris Van Hollen received 1.7M (61.0 %) votes, beating Kathy Szeliga who gained 972.6k (35.7 %) by 687.4k votes in Maryland.
Chris Van Hollen won 6 counties out of the 24 counties that make up Maryland. The record shows that Kathy Szeliga won 18 counties.
During the 2016 general elections, over 3M total number of votes were cast. Chris Van Hollen got 1,659,907 (2M) over Kathy Szeliga 972,557 (973k). He won the popular vote by 1,659,907 (2M). His victory in the State of Maryland (with 1,659,907 votes) represents 50.0% of his popular vote victory.
Top 15 Counties in General Elections
All Candidates (Senate General Elections)
These 15 counties play an important role in these Primary elections. If a candidate, can get a sizable majority in the largest counties (Montgomery, Prince George's and Baltimore), it becomes very difficult to win majorities in the smaller counties without voter outreach and increased voter participation in them.
Top 15 Counties Comparison in General Elections
Chris Van Hollen
Montgomery, Prince George's and Baltimore, three of the larger counties voted in favor of Chris Van Hollen, giving him a 519k vote advantage.