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

VP Joseph Biden received 296,268 (60%) votes beating President Donald Trump who gained 200,603 (40%) by 95,665 votes in Delaware.  

VP Joe Biden won 2 counties out of the 3 counties that make up Delaware. The record shows that President Trump won 1 county.  

2020 DE Primary Election vs Presidential General Elections Counties Won          

Primary Elections

Presidential General Election

Primary Election

In the Primary, VP Biden won the 3 counties in a 3 way match up, leaving both President Trump and Senator Sanders winning no counties in Delaware Primary.

2020 DE 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 14% increase for President Trump and a 14% decrease for VP Biden. These percentages are represented by a vote increment of 171,727 for Trump and 214,314 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 3 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 3 counties play an important role in these primary elections. If a candidate, can get a sizable majority in the largest county (New Castle), it becomes very difficult to win majorities in the other 2 counties with out voter out reach and increased voter participation in them.

Top 3 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

New Castle and Kent voted in favor of VP Biden, giving him a 110k vote advantage out of those counties. President Trump's win at the county of Sussex only gave him an advantage of 14k votes, which was not enough to overcome the deficit, thus making Biden gain an upper hand in the State of Delaware.

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