So, no basis in fact.
Might as well thoroughly beg the question with: Those in power are corrupt because power corrupts.
A logical fallacy which still creates a problem for your hypothetically pure third party: a political power without anyone with any power to be corrupted.
Pure, no. Just free of left-wingers and people who seek power for its own sake. And I would cite the nomination of Romney as evidence the process is quite corrupt. Don’t you find it odd that a man who governed in a way that would make most Democrats proud wound up as the Republican nominee for president?
And by the way, if you were looking for a “Priebus handed off a big sackful of cash to xxx on x/x/12” you’re not going to get one. But machine politics are old as this country and long practiced by both parties. That is a fact.