DU has an ActBlue Biden link for making campaign donations:

[ucrdem]

5. Here's some info Steve posted in the old group:

Omaha Steve (68,399 posts) -- Sun Mar 31, 2019, 10:03 AM

8. ActBlue doesn't skim ANYTHING

I have raised over $100,000 for dozens of candidates on ActBlue BTW.

Only the bank charge for the transaction is lost. That is why CANDIDATES use ActBlue to begin with. ActBlue does ask for an OPTIONAL tip.

I think it is a forgone conclusion Joe will be announcing soon. Why else is he the #2 choice on DU of those that have bothered to pick a candidate over in DP? Like other POTUS candidates he will use ActBlue too!

OS

...................

I'd wondered too, but duforJoe seems to route directly to the Biden campaign, just as Steve says.

Go Joe!