The New York Times has some nice graphics of the donors to the various candidates. What is clear is the Bernie Sanders has the broadest base of support that spans the entire country, rural and urban. His support is so wide that the others get obliterated so they had a second graphic without Sanders. We then see that next to him, Elizabeth Warren also has a nationwide base, while all the other candidates tend to have most of their support from their local regions.
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.
A map that includes the rest of the Democratic field without Mr. Sanders offers a picture of where the other major candidates are picking up donors. Senator Elizabeth Warren of Massachusetts, the other leading progressive in the race, is outpacing the rest of the field across much of the country — a sign that her strategy of relying on grass-roots donors, and refraining from holding high-dollar fund-raisers, is working.
Sanders has also raised the most money, with Pete Buttigieg second, and Elizabeth Warren third. But note that Buttigeieg, along with Kamal Harris and Joe Biden, has been getting big money donations from Wall Street bank executives while Sanders and Warren are being largely supported by small donations.