Fwiw, much as I like Warren, I clicked her name a week or two ago to show support of a good person and plan to do that for a couple others I'm especially interested in, because it's too early to get emotionally invested in any candidate. Like so many, I'll ultimately be voting for the person I guess will be the most electable good Democrat.
I'd be delighted if that turned out to be Elizabeth Warren, though.
Here's Center For Public Integrity's summary on her. https://publicintegrity.org/federal-politics/elections/presidential-profiles-2020/elizabeth-warren-campaign-election/
Like any other federal political candidate, Warren has been limited in the amount of money she can collect from individual donors. But she nonetheless has raised $34.7 million since 2013 more than half of which came from donors giving less than $200, small individual contributors. She still has $12.5 million in her U.S. Senate campaign account, which she can use toward her presidential bid.
Btw, From a linked source speaking about Open Secrets data on past elections -- remembering she just swore off big donors:
"Just 1.4 percent of Warrens campaign money has come from PACs. Of that, 12.91 percent is from business PACs. Large individual donors made up 29.72 percent of her campaign funding.
These figures make clear that the (Democratic) senators are giving up relatively little money by swearing off donations from corporate PACs it just isnt a very big portion of their overall campaign funding."
https://theintercept.com/2018/04/27/pacs-democrats-campaign-finance-reform-pacs-big-money/
Well, yes. Btw, that source, The Intercept, finding very little PAC influence on these Democratic senators, suggested there must be some secret source of (Democratic) funding to explain DC's massive corruption, but the author kind of failed to mention or look at the Republicans. Mitch McConnell received 20% of his funding from PACs from 2013-2018, also over 50% from large individual donors, and 4.7% from small contributors.