After Mamdani Mania, the Next Democratic Test Comes to Tucson

Adelita Grijalva remains heavily favored to win the House seat of her late father, Raúl Grijalva, but youthful challengers and tired voters are asking why change is so hard for Democrats.Daniel Hernandez, a Democratic congressional candidate, meeting with a supporter, Beatrice Torres, while door-knocking last month in Tucson, Ariz.