A Democratic pollster is urging Vice President Kamala Harris to counteract impressions that she’s too liberal or too soft on immigration, after a snap poll identified some of her biggest potential vulnerabilities. “Voters have a very limited perception of Harris: liberal, prosecutor,” said Blueprint lead pollster Evan Roth Smith, who surveyed 1537 registered voters on July 21 and 22. “Their concerns are largely limited to standard concerns over being left-leaning generally, and some specific...