San Francisco Mayor London Breed (D) endorsed former New York City Mayor Michael Bloomberg Michael BloombergTop Democratic super PAC launches Florida ad blitz after Bloomberg donation The Hill's 12:30 Report - Presented by Facebook - Latest with the COVID-19 relief bill negotiations The Memo: 2020 is all about winning Florida MORE in the 2020 Democratic presidential primary on Thursday, saying he was the best positioned to beat President Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE in the general election.

“He has the ability to beat Donald Trump this November, and that is of the most concern to me," Breed told the San Francisco Chronicle.

“If there was someone else who could [beat Trump], I would be supporting them," she continued but added she would support whoever wins the party's nomination.

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Breed also said Bloomberg's “track record of what he’s done as New York City mayor and what he’s done afterward has been significant.”

The mayor said she would advise Bloomberg's campaign on a number of issues including employment, climate change and housing.

Breed's endorsement is the latest for Bloomberg, who scored his first congressional endorsements earlier this month from Reps. Stephanie Murphy Stephanie MurphyDemocrats scramble on COVID-19 relief amid division, Trump surprise Bank lobbying group launches ad backing Collins reelection bid House Democrats call on State Department for information on Uighur prisoner Ekpar Asat MORE (D-Fla.), Harley Rouda Harley Edwin RoudaUS Chamber of Commerce set to endorse 23 House freshman Democrats OVERNIGHT ENERGY: Watchdog to weigh probe of Trump advancements on Pebble Mine | Interior finalizes public lands HQ move out West over congressional objections | EPA to issue methane rollback: report Watchdog to weigh probe of Trump administration advancements of Pebble Mine MORE (D-Calif.), Max Rose Max RoseLawmakers fear voter backlash over failure to reach COVID-19 relief deal The Hill's Morning Report - Sponsored by The Air Line Pilots Association - Pence lauds Harris as 'experienced debater'; Trump, Biden diverge over debate prep Navy cancels training flight over NYC on 9/11 after criticism MORE (D-N.Y.) and Bobby Rush Bobby Lee RushCongress should investigate OAS actions in Bolivia Rep. Bobby Rush introduces legislation focused on addressing racism, lack of diversity in the federal government House Democrat introduces bill to replace Confederate monuments nationwide MORE (D-Ill.).

While Bloomberg will not be on the ballot for the first four Democratic nominating contests, his campaign has poured resources into the Super Tuesday states scheduled to vote on March 3.

Bloomberg has hired more than 800 staffers, including 500 field organizers across 30 states, since entering the crowded primary in November.