“We have abandoned our cities,” Mr. Adams said Wednesday on CBS’s “This Morning,” when asked what lessons his victory might give to Democrats nationwide. “What’s happening in New York City is taking place in Chicago’s South Side. It’s taking place in California, in Atlanta. You’re seeing gun violence, and it’s so pervasive.” Mr. Adams pledged to put more officers on the street. The primary wasn’t originally a single-issue contest. Then the rate of shootings, which started rising last summer, this May reached a 73% increase over 2020. An Ipsos poll that month found that crime had eclipsed the pandemic as voters’ top concern. Mr. de Blasio gave voters a clear sense of the choice they faced by consistently denying the crime problem. He held a press conference Tuesday to celebrate a drop in shootings last month compared with June 2020, but he failed to mention that they remained 85% above June 2019. Mr. Adams has said that “denying what is happening in broad daylight is contributing to the problem.”