You are right about the Cruz and the grassroots facade. I heard him on Hannity a few days before the debate. He kept talking about the donations under 50 dollars and how his campaign was “true” grassroots. I have no doubt that he didn’t want these loans to be public knowledge.
Ironically, Trump is raking in tons of small donations without hammering his following for $$$ every ten minutes.
http://www.peoplemagazines.net/small-donations-that-are-powering-trumps-campaign/