There was a drive to get to 3 million contributions by 12AM, and they’ve done it.
At 7:39 PM they were at 2,975,975 contributions according to reddit, so 25,000 contributions in 4 hours basically.
Source: go.berniesanders.com/...
EDIT: if the average donation is around less then 30 dollars, 25,000 contributions in 4 hours is at least USD600,000 if I had to guess.
As a sort of comparison, it took until September 2015 from the campaign’s announcement (April 2015) to make 1 million total contributions, then three months (December) to make 2 million, and one month later we’re at 3 million.