The practice of making unscrupulous, malicious attacks against an opponent, as in a political campaign.
An act of mudslinging.
The mudslinging didn't help expand the media coverage of the issues; all that was reported was the mudslingings.
Mudslinging is the act of making hateful statements or comments about someone, usually a political opponent.
An example of mudslinging is what opposing politicians say about each other in smear campaigns.