Democratic presidential candidate 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 picked up three more congressional endorsements, despite struggling in his primary debate debut Wednesday night in Las Vegas.

Democratic Reps. Josh Gottheimer Joshua (Josh) GottheimerCentrist House group offers bipartisan COVID-19 relief deal Hillicon Valley: Lawmakers introduce resolution condemning QAnon | US Cyber Command leader vows to 'defend forward' in protecting nation from cyberattacks House Democrats request briefing on seizure of terrorist cryptocurrency assets MORE (N.J.), Nita Lowey Nita Sue LoweyTop House Democrats call for watchdog probe into Pompeo's Jerusalem speech With Biden, advocates sense momentum for lifting abortion funding ban Progressives look to flex their muscle in next Congress after primary wins MORE (N.Y.) and Pete Aguilar Peter (Pete) Ray AguilarRep. Robin Kelly enters race for Democratic caucus vice chair Pelosi seeks to put pressure on GOP in COVID-19 relief battle Races heat up for House leadership posts MORE (Calif.) all pledged their support to the billionaire, giving Bloomberg a total of 15 congressional endorsements, second to only former Vice President Joe Biden Joe BidenSenate Republicans face tough decision on replacing Ginsburg What Senate Republicans have said about election-year Supreme Court vacancies Biden says Ginsburg successor should be picked by candidate who wins on Nov. 3 MORE, who has more than three times that amount.

Each lawmaker has a strong connection — either political or personal — to the former New York mayor, The Associated Press reports.

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For example, Howard Wolfson, Lowey's former chief of staff, was a longtime Bloomberg aide and is now a top adviser to his campaign.

Bloomberg also campaigned for Gottheimer in 2018, and the New York congressman's brother-in-law, Bradley Tusk, managed Bloomberg's mayoral reelection campaign in 2009.

Aguilar, chief deputy whip of the House Democratic Caucus, got support from Independence USA PAC — a Bloomberg political group — during a tough 2014 congressional race.

Aguilar, also a former mayor, cited Bloomberg's knowledge of tough issues “at both the national and local levels” and his “track record as a former mayor on gun safety and climate," according to the AP.

Rival Democrats repeatedly targeted Bloomberg in the debate Wednesday night in Las Vegas, launching attacks in the first minutes of the event.

Updated at 8:46 a.m.