With mom by his side, Booker signs paperwork declaring candidacy for president

With mom by his side, Booker signs paperwork declaring candidacy for president

Sen. Cory BookerCory Anthony Booker2020 Democrats defend climate priorities in MSNBC forum MSNBC Climate Change Forum draws 1.3M viewers in 8 pm timeslot Iowa Steak Fry to draw record crowds for Democrats MORE (D-N.J.) on Friday signed the paperwork declaring his candidacy for president with his mother by his side after he announced his 2020 bid.

Matt Klapper, a senior adviser for Booker’s campaign, shared a video of the senator signing the documents while standing at a kitchen counter.

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His mother, Carolyn Booker, was next to him with a hand on his shoulder.

“Alright, here we go,” Booker said as he wrote his name. “The paperwork is signed. I am official.”

“Official for what, sir?” someone asked.

“Official for running for president,” Booker responded with a laugh.

“Can’t take it back now,” a voice behind the camera said. “Somebody grab that before he rips it up.”

The video was viewed more than 113,000 times in the hours after Booker released his first campaign video on Friday.

"The history of our nation is defined by collective action; by interwoven destinies of slaves and abolitionists; of those born here and those who chose America as home; of those who took up arms to defend our country, and those who linked arms to challenge and change it," Booker said in the campaign video, walking around the community of Newark, N.J., where he previously served as mayor. 

The announcement, made on the first day of Black History Month, follows months of speculation on whether Booker would join the crowded field of Democratic contenders vying to take on President TrumpDonald John TrumpJulián Castro: It's time for House Democrats to 'do something' about Trump Warren: Congress is 'complicit' with Trump 'by failing to act' Sanders to join teachers, auto workers striking in Midwest MORE.

The New Jersey Democrat, 49, is up against the more than half dozen U.S. senators who have declared they are running or are seriously considering a bid.

Sens. Elizabeth Warren (D-Mass.), Kirsten Gillibrand (D-N.Y.) and Kamala Harris (D-Calif.) have all launched campaigns. 

Other senators who have indicated interest in running for the Democratic nomination in 2020 include Sens. Bernie SandersBernie SandersSanders to join teachers, auto workers striking in Midwest Krystal Ball tears into 'Never Trump' Republicans 2020 Democrats defend climate priorities in MSNBC forum MORE (I-Vt.), Amy KlobucharAmy Jean KlobucharMSNBC Climate Change Forum draws 1.3M viewers in 8 pm timeslot The two most important mental health reforms the Trump administration should consider Sanders searches for answers amid Warren steamroller MORE (D-Minn.) and Michael BennetMichael Farrand BennetThe Hill's Campaign Report: De Blasio drops out | Warren gains support from black voters | Sanders retools campaign team | Warning signs for Tillis in NC Williamson: Climate change result of an 'amoral' economic system Bennet: 'This generation has a lot to be really angry at us about' MORE (D-Colo.). Sanders is reportedly preparing to launch a campaign that he’ll announce soon. 

Also running are Rep. Tulsi GabbardTulsi GabbardAnalysis: 2020 digital spending vastly outpaces TV ads Sanders searches for answers amid Warren steamroller Kavanaugh book author on impeachment calls: 'That's not our determination to make' MORE (D-Hawaii), former Rep. John DelaneyJohn Kevin Delaney2020 Democrats defend climate priorities in MSNBC forum The Hill's Campaign Report: De Blasio drops out | Warren gains support from black voters | Sanders retools campaign team | Warning signs for Tillis in NC Analysis: 2020 digital spending vastly outpaces TV ads MORE (D-Md.), former Housing and Urban Development Secretary Julián Castro and Pete Buttigieg, mayor of South Bend, Ind.

Booker, if elected, would be the first unmarried man elected to White House since 1884.