It’s a nasty outbreak not seen since the 1990s: Americans are suffering a terrible bout of “Clinton fatigue,” according to a new TV ad that depicts sickly voters languishing in a hospital. The ad, produced by the defeat Crooked Hillary PAC, depicts a doctor and a nurse strolling through a room full of lethargic people lying in beds and slumped in wheelchairs. “We haven’t seen anything like this since the ’90s,” the doctor tells the nurse, referencing Bill Clinton’s presidency from 1993 to 2001. “They look so lifeless,” the nurse responds. “Well, they’ve been through a lot,” the doctor says....