I agree that there was lots of fraud in his fundraising, but even those investigating say it probably amounts to 20-30% of all fund raising. That still does not explain the multiple millions of real people who gave money under real names. These people obviously bought the branding.
I'm not sure it was only 30%, but 30% of $639 million is $192 million. In addition, labor unions, liberal special interest groups and government employees always give to the Democrat candidate no matter what.