Mercury News–

California state Sen. Kevin de León’s uphill intraparty bid to unseat U.S. Sen. Dianne Feinstein has received a big boost with an endorsement from billionaire Democrat activist Tom Steyer.

“I have known Sen. de León for years and have fought alongside him on immigrant rights, expanding health care, and climate change,” Steyer said in a statement to this news organization Wednesday. “Our work together on behalf of all Californians has assured me that he would be the champion of California’s priorities and values. Kevin de León has proven himself to be the best of the next generation, and I am proud to support him for U.S. Senate.”

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