There are already a few groups damaging the election process, but there are also good investigative reporters exposing these groups. Please take a look at these.
In a new, ongoing report, the Center for Public Integrity compares "Freedom's Watch", a White House front group, with MoveOn. (While I don't agree with everything they say, they're genuinely grassroots.)
The Center for Investigative Reporting just released "Group with Clinton Ties Behind Dubious Robocalls"