SAN FRANCISCO (CBS/AP) — Billionaire climate activist Tom Steyer says he will not enter the race to succeed California Sen. Barbara Boxer.

Steyer was seriously considering a 2016 bid after Boxer announced earlier this month she would step down at the end of her term.

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But the Democrat says in a statement Thursday on The Huffington Post that he sees his work “at home in California,” not on Capitol Hill.

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Attorney General Kamala Harris—another Democrat—has entered the race and at least a dozen others are considering bids, including former Los Angeles Mayor Antonio Villaraigosa.

Steyer says he applauds those running and is confident voters will choose a senator who will serve them well.

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