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Cory Booker endorses Biden

Cory Booker endorses Biden

Sen. Cory BookerCory BookerNever underestimate Joe Biden Police reform talks ramp up amid pressure from Biden, families Victims' relatives hold Capitol Hill meetings to push police reform MORE (D-N.J.) announced his support for former Vice President Joe BidenJoe BidenCaitlyn Jenner on Hannity touts Trump: 'He was a disruptor' Argentina launches 'Green Mondays' campaign to cut greenhouse gases On The Money: Federal judge vacates CDC's eviction moratorium | Biden says he's open to compromise on corporate tax rate | Treasury unsure of how long it can stave off default without debt limit hike MORE's presidential campaign early Monday, adding to Biden's list of endorsements from his former primary opponents.

"The answer to hatred & division is to reignite our spirit of common purpose," Booker, who ended his own presidential campaign in January, said in a tweet.

"@JoeBiden won’t only win - he’ll show there's more that unites us than divides us," the senator said, adding that Biden will "restore honor to the Oval Office and tackle our most pressing challenges."

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"That’s why I’m proud to endorse Joe," he said.

Biden has added a slew of endorsements since an impressive showing on Super Tuesday last week, including one from Sen. Kamala HarrisKamala HarrisCaitlyn Jenner on Hannity touts Trump: 'He was a disruptor' Nearly half of women say they're more stressed amid pandemic: survey Alabama museum unveils restored Greyhound bus for Freedom Rides' 60th anniversary MORE (Calif.), another former rival for the Democratic presidential nomination.

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Sen. Amy KlobucharAmy KlobucharRepublicans float support for antitrust reform after Trump Facebook ban upheld Washington keeps close eye as Apple antitrust fight goes to court Senate Democrats push Biden over raising refugee cap MORE (D-Minn.) and former South Bend, Ind., Mayor Pete ButtigiegPete ButtigiegBiden administration in talks with LA Mayor Eric Garcetti for India ambassador post: reports Business groups target moderate Democrats on Biden tax plans Biden plugs infrastructure with a personal favorite: Amtrak MORE endorsed Biden after ending their 2020 campaigns shortly before Super Tuesday. The support from those fellow moderate candidates may have contributed to Biden’s surge in the 15 states in which ballots were cast last Tuesday. Biden himself credited Klobuchar for cinching his win in Minnesota.

Former Texas Rep. Beto O’Rourke (D) also endorsed Biden before Super Tuesday.

Sen. Elizabeth WarrenElizabeth WarrenBiden backs COVID-19 vaccine patent waivers Schumer works to balance a divided caucus's demands DNC gathers opposition research on over 20 potential GOP presidential candidates MORE (D-Mass.), a progressive candidate who ended her campaign after Super Tuesday, has said she will not immediately endorse a candidate.

Biden holds a slight lead in delegates over Sen. Bernie SandersBernie SandersBriahna Joy Gray: Biden campaign promises will struggle if Republicans win back Congress Biden backs COVID-19 vaccine patent waivers McConnell sidesteps Cheney-Trump drama MORE (I-Vt.). The two candidates will face off in six contests on Tuesday.

--Rebecca Klar contributed to this report, which was last updated at 7:52 a.m.