Democrats have been on defense on the economy this year, and the latest report showing inflation still at a 40-year high hasn’t helped. But a new $4.5 million ad campaign seeks to test whether Democrats can craft economic messages that put Republicans on defense. The six-week ad campaign launched Monday by a group called Unrig Our Economy, which launched earlier this year, targets GOP Reps. Nicole Malliotakis of New York, David Valadao of California, Don Bacon of Nebraska and Ashley Hinson of Iowa. The ads argue that the lawmakers have done more to support corporations than working-class people. “The point...