A head to head comparison of the Maryland 2020 General Election gives us an idea of the break down of the voters.      

VP Joseph Biden received 1,715,498 (66%) votes beating President Donald Trump who gained 900,082 (34%) by 815,416 votes in Maryland.

VP Joe Biden won 16 counties out of the 24 counties that make up Maryland. The record shows that President Trump won 8 counties.  

2020 MD Primary Election vs Presidential General Elections Counties Won              

Primary Elections

Presidential General Election

Primary Election

In the Primary, VP Biden won 13 counties in a 3 way match up. President Trump trailed behind him winning 11 counties with Senator Sanders winning none in Maryland Primary.

2020 MD Presidential Primary vs Presidential General Elections w.r.t % Votes and Total Votes Won        

Presidential Primary Elections

Presidential Election

On a head to head count with the total votes between in VP Biden and President Trump between the Presidential Primary and General Elections, percentage (%) vote shift difference is a 10% increase for President Trump and a 10% decrease for VP Biden. These percentages are represented by a vote increment of 602,884 for Trump and 835,745 for Biden at the Presidential General Elections.

Presidential Primary Elections

Presidential General Elections

During the 2020 General elections, a lot of total number of votes were cast. Aside the Electoral Votes, Popular Votes came to the fore as well. Further details regarding overall total votes cast, percentage contributed by the various states, and the winner of Popular votes will be updated soon.

Top 15 Counties in Presidential Primary Elections vs Presidential General Elections

All Candidates (Presidential Primary Elections)

All Candidates (Presidential General Elections)

Primary Elections vs General Elections

These 15 counties play an important role in these primary elections. If a candidate, can get a sizable majority in the larger counties (Prince George's, Montgomery and Baltimore), it is still possible for other candidates to catch up if they win many of the smaller counties.

Top 15 Counties Comparison in Primary Elections vs General Elections

Presidential Primary Elections
VP Joseph Biden

Presidential Primary Elections
President Donald Trump

Presidential General Elections
VP Joseph Biden

Presidential General Elections
President Donald Trump

Prince George's, Montgomery and Baltimore, three of the larger counties in Maryland, voted in favor of Joseph Biden giving him a 618k vote advantage out of those counties. This lead over President Trump plus a steady win at many of the other counties was more than enough to make him gain an upper hand in the State of Maryland.

Related References: 2020 Maryland Primary Election Story, 2016 Maryland Primary Election Story, 2012 Maryland Primary Election Story