As was clear during abortive Republican investigations into various Clinton scandals, in the culture of impunity of Washington, politics stops at corruption's edge. Almost all major corruption is either bipartisan or common enough that one side can effectively blackmail the other.
Why else would Clinton have remained in office. After all, with 900 FBI raw data files, you can sift enough dung out of unsubstantiated dirt to pick up the ‘swing’ vote.