During a stop in Toledo Sunday, New York Mayor Bill de Blasio told Hillary Clinton supporters that he’s personally seen a “toughness and purposefulness” about her. Supporters gathered at Warren and Pat Tipton’s home to hear the mayor at an event to promote early voting. Mr. de Blasio, who ran Mrs. Clinton’s 2000 Senate campaign, said those are the qualities voters should value. “And that’s what I want in a president,” he said. “I think we need to really dwell on that. Do we want a president who is going to have a solidity to keep going no matter what’s...