In just a few days, Sen. Cory Booker Cory Anthony BookerSunday shows preview: Lawmakers prepare for SCOTUS confirmation hearings before election The movement to reform animal agriculture has reached a tipping point Watchdog confirms State Dept. canceled award for journalist who criticized Trump MORE's presidential campaign raised more than $1 million dollars after Sen. Kamala Harris Kamala HarrisPelosi: Trump Supreme Court pick 'threatens' Affordable Care Act What Kamala Harris' VP nomination means to us Harris slams Trump's Supreme Court pick as an attempt to 'destroy the Affordable Care Act' MORE (D-Calif.) left the Democratic primary contest and amid the New Jersey Democrat's calls for more diversity in the race.

Booker's campaign received the cash between Tuesday, the day Harris suspended her campaign, and Friday, CNN reported Saturday, citing the Booker campaign.

More than half of the 33,000 people who gave to the campaign since Tuesday, about 17,000 people, were new donors to the campaign, according to the news network. Their average donation was $25.

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After Harris left the race, Booker critiqued the 2020 field as having "more billionaires" than "black people."

He and former Massachusetts Gov. Deval Patrick are the only remaining black candidates, and there are also two billionaire candidates: Tom Steyer Tom SteyerTV ads favored Biden 2-1 in past month Inslee calls Biden climate plan 'perfect for the moment' OVERNIGHT ENERGY: Trump administration finalizes plan to open up Alaska wildlife refuge to drilling | California finalizes fuel efficiency deal with five automakers, undercutting Trump | Democrats use vulnerable GOP senators to get rare win on environment MORE and Michael Bloomberg Michael BloombergBloomberg rolls out M ad buy to boost Biden in Florida Democratic groups using Bloomberg money to launch M in Spanish language ads in Florida Bloomberg pays fines for 32,000 felons in Florida so they can vote MORE.

"This is not about one candidate. It is about the diverse coalition that is necessary to beat Donald Trump Donald John TrumpBiden says voters should choose who nominates Supreme Court justice Trump, Biden will not shake hands at first debate due to COVID-19 Pelosi: Trump Supreme Court pick 'threatens' Affordable Care Act MORE," Booker also said this week in Iowa, according to CNN.

His comments come as the Democratic debates could have an all-white stage for the first time this election cycle. Harris had qualified for the December debate before ending her campaign.

More than a dozen people are currently vying for the 2020 Democratic presidential nomination.