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

VP Joseph Biden received 2,267,708 (58%) votes beating President Donald Trump who gained 1,621,505 (42%) by 646,203 votes in New Jersey.

VP Joe Biden won 16 counties out of the 21 counties that make up New Jersey. The record shows that President Trump won 5 counties.  

2020 NJ Primary Election vs Presidential General Elections Counties Won              

Primary Elections

Presidential General Election

Primary Election

In the Primary, VP Biden won 16 counties in a 3 way match up. President Trump trailed behind him winning 5 counties, with Senator Sanders winning nothing in New Jersey Primary.

2020 NJ 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 9% increase for President Trump and a 9% decrease for VP Biden. These percentages are represented by a vote increment of 1,222,877 for Trump and 1,461,966 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)

These 15 counties play an important role in these primary elections. If a candidate, can get a sizable majority in the larger counties (Bergen, Monmouth and Ocean), it is still possible for other candidates to catch up, since there are many other counties of similar size.

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

Bergen, the largest county in New Jersey, voted in favor of VP Joseph Biden, while Ocean and Monmouth voted in favor of President Trump. These counties gave Trump a 23k vote advantage, however, Biden's steady win at many other counties was enough to overcome that deficit, making him gain an upper hand in the State of New Jersey.

Related References: 2020 New Jersey Primary Election Story, 2016 New Jersey Primary Election Story, 2012 New Jersey Primary Election Story