Differences between Democratic voting bases in CA and MA

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What is the reason Bernie Sanders easily won the primary in Northampton and Amherst MA, but lost Hacienda Heights, CA; and Long Beach, CA was very competitive?

In California, I think the primary may have split more on income than race. Bernie won the most diverse city in America, Oakland, but badly lost the rich mostly white city of Piedmont that it surrounds.

[○∙◄☻¥tπ[╪AV┼cVê└]

What is the reason Bernie Sanders easily won the primary in Northampton and Amherst MA, but lost Hacienda Heights, CA; and Long Beach, CA was very competitive?

In California, I think the primary may have split more on income than race. Bernie won the most diverse city in America, Oakland, but badly lost the rich mostly white city of Piedmont that it surrounds.

Was it a close race in Oakland?

Yes, but Bernie did win it.