Detailed Maps of the Donors Powering the 2020 Democratic Campaigns

Senator Bernie Sanders of Vermont has a huge lead over other Democratic presidential candidates in the number of individual donors they have each accumulated so far.

This is the first time since the primary race began in earnest that we can estimate how many individual donors each candidate has attracted — a key indicator of how much they are catching on with voters.

Mr. Sanders is relying heavily on small donors to power his campaign, and he entered the 2020 race with a huge network of online donors who supported his 2016 presidential bid. The map above shows the breadth of Mr. Sanders’s roster of donors across the United States.