1.) The Shitcast cable company is faced with a competitor who delivers significantly faster Internet service at a lower price. The cable company begins aggressively advertising how much faster their product is compared to their competitor's old product, and how much cheaper their new VOIP service is compared to regular phone service... not mentioning that in order to use their VOIP service, you have to have their cable Internet service, which costs more than their competitor's phone and Internet service combined.
2.) Candidate A has a shady military service history. Candidate B is a war hero. Candidate A viciously attacks Candidate B's military service record.