Not sure what the fraud is all about. It doesn't take much to realize that the site isn't exactly pro-candidate. Here is what is on the one page website:
John Lewis is bad for Montana:
After more than a decade working under Baucus, John Lewis has pocketed over $568,000 of taxpayers money
Lewis has been laying the groundwork for his campaign by visiting every county in Montana on the taxpayers dime
Lewis has spent nearly 12 years working under Baucus and was a top aide to the chief architect of Obamcare
John Lewis for Congress
Now I realize that the democrats have to worry about how stupid are their members, after all we have 2008 and 2012 proving they just aren't that smart. But even a quick read of the site indicates that it certainly isn't a pro-candidate site. The only thing that MIGHT be fraud is the name of the website.
And don't forget this is a story ginned up by CNN who has "created" so much news that they are losing their following. So they will create nothing out of something to try and sell their soap suds.