The Freeper that posted the story here at Free Republic said he was, and then linked the indictment. I didn't bother to check if this is true because one would think someone wouldn't post it here if it had no basis in fact.
Looking around, I see several stories claiming Davis worked for Hillary's campaign, but I see nothing to indicate he was, as has been alleged, her "Campaign Chairman. He was *a* campaign chairman, but not for Hillary. I think someone just saw the words "Campaign Chairman" and "worked for Hillary", and made an unsupported extrapolation.
But any offficial role is unclear. I would want to see the evidence for it.
I think characterizing him that way was the result of a mistake. I think some people in their zeal, get sloppy.
Including me.