The last time Bob Wallace ran for mayor, in 2020, Baltimore faced twin crises of a raging pandemic and a fiscal cliff. Undaunted by the city’s solid-blue voting patterns, Wallace, until then a lifelong Republican, ran as an independent. Wallace, 67, is running this time as a Democrat. And with less than a month until the May 14 primary, he hopes voters will give him a chance to usher in a “new ...