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

President Donald Trump received 341,763 (58%) votes beating VP Joseph Biden who gained 243,714 (42%) by 98,049 votes in Montana.

President Trump won 45 counties out of the 56 counties that make up Montana. The record shows that VP Joe Biden won 11 counties.  

2020 MT Primary Election vs Presidential General Elections Counties Won              

Primary Elections

Presidential General Election

Primary Election

In the Primary, President Trump won 52 counties in a 3 way match up. VP Biden trailed behind him winning 4 counties with Senator Sanders winning nothing in Montana Primary.

2020 MT 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 6% increase for VP Biden and a 6% decrease for President Trump. These percentages are represented by a vote increment of 132,008 for Biden and 141,589 for Trump 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 (Yellowstone, Missoula and Gallatin), it becomes very difficult to win majorities in the smaller counties with out voter out reach and increased voter participation in them.

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

Missoula and Gallatin, two of the larger counties in Montana, voted in favor of VP Joseph Biden giving him a 22k vote advantage out of those counties. However, President Trump's win at many other counties (including Yellowstone, a crucial one) made him gain an upper hand in the State of Montana.

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