Matier & Ross in SF Gate report among the early frontrunners is California Attorney General Kamala Harris.
Harris, who’s mother is Indian American, has been up to now mentioned as someone favored to be California’s next Governor. But that can’t happen until 2018 at the earliest.
Her biggest rivals in any potential race for either Governor or US Senator is California Lieutenant Governor and former mayor of San Francisco Gavin Newsom.
Both Newsom and Harris, in a show of Democratic unity, hosted a recent fundraiser for the party.
Another possible candidate for US Senate is outgoing State Controller John Chiang. For now, Chiang is running for State Treasurer and Harris and Newsom are both running for re-election.
You can read about why Boxer is not expected to run for re-election in SF Gate.