Part of Mr. Sanders’s strength among Latinos can be chalked up to the fact that the Hispanic population in the United States skews younger than the rest of the country — and Mr. Sanders continues to draw by far his strongest support from voters under 50.
“Our population is so young that most of the people are in the 40-and-under category,” Matt Barreto, a founder of the polling firm Latino Decisions, said in an interview. “So in the aggregate he is doing really well” among Hispanic voters.
Indeed, Mr. Sanders remains far more popular among younger Latino voters than among older ones. But he now runs a strong second to Mr. Biden even among Latinos over 50, pulling 21 percent of their votes, according to a Pew survey released on Thursday. All of the other Democratic candidates poll in the single digits with this group.