The Democrats running for the Presidential nomination have repeatedly said they want their financial support to be from the people and not the big corporations and wealthy people. They want millions of people giving $200 dollars instead of a super pac controlling millions from a few. This election will cost each nominee well over a billion dollars. That is a $200 contribution from over 500,000 people. It’s possible over two billion will be needed and that means a million contributors. The first might be possible but the second is doubtful.
I understand their reason for populist funding and it would be nice if all campaigning was small donations but that isn’t going to happen until the Supreme Court remedies their decision. Big donors want payback for their money. Sometimes it is an Ambassadorship to some innocuous country, a cabinet position, or an advisor in the White House, Sometimes it is no more than well televised meetings to give advice. Often that support requires reversing environmental rules, leasing in restricted areas, or making a favored person a Federal Judge or Supreme Court Justice.
Hillary Clinton got 3 million more votes than Donald Trump but I doubt if all her little contributors added up to 500,000 people much less donating the billions her campaign spent. As long as the Citizens United decision stands, huge amounts of money will need to be raised and favors granted. It is called the selling of the presidency!