Each of California’s 53 congressional districts send 3 delegates to Cleveland. The California primary will be 53 separate elections. I don’t believe the stories that anybody has a big lead in the polls. If Cruz uses his ground game in the solid Democrat districts he could surprise a lot of people. Some of those districts in places like south central LA have extremely few Republicans. A Republican could probably win in Maxine Waters’ district with less than 100 votes. Maxine Waters’ district sends 3 delegates, the same as the safe Republican districts.
He’s had a campaign there for about a year now.