Eh. This article is about tens of thousands, and Santos raised millions. That's not the funding for "his entire campaign." It's too much money to take from an oligarch, but it went through a relative and then through PACs, which is... really how this thing usually happens, not a sign that he was a russian plant or a national security threat (although he kinda is, just because he's lied so damn much that nobody knows who he is anymore).