In Arizona special election, Democrats try to focus on the district while sending a national message

GLENDALE, AZ—On Saturday, more than 100 people packed into a high school lunchroom in Glendale, Arizona to hear Hiral Tipirneni, the Democratic nominee to replace former Rep. Trent Franks (R-AZ), speak before heading out to knock on doors in hopes of bringing more Arizona voters into the fold.

Tipirneni is running in Arizona’s eighth district, which President Donald Trump won by more than 20 points just less than a year and a half ago. But two recent polls (one an internal pol...