Former Vice President Joe Biden Joe BidenBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Democratic groups using Bloomberg money to launch M in Spanish language ads in Florida Harris faces pivotal moment with Supreme Court battle MORE led the field of presidential contenders in digital ad spending last week, dropping roughly $438,000 on Facebook and Google advertisements, according to data from the two companies.

The spending, which covers the week of April 28, means that the former vice president spent more than $1.2 million on Facebook and Google ads in the less than two weeks since he launched his 2020 presidential bid.

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Biden’s $1.2 million in total ad spending on the two platforms is topped in the Democratic field only by Sens. Kamala Harris Kamala HarrisHarris faces pivotal moment with Supreme Court battle Nearly 40 Democratic senators call for climate change questions in debates Joe Biden has long forgotten North Carolina: Today's visit is too late MORE (D-Calif.), Elizabeth Warren Elizabeth WarrenDimon: Wealth tax 'almost impossible to do' CNN's Don Lemon: 'Blow up the entire system' remark taken out of context Democrats shoot down talk of expanding Supreme Court MORE (D-Mass.) and Bernie Sanders Bernie SandersOutrage erupts over Breonna Taylor grand jury ruling Dimon: Wealth tax 'almost impossible to do' Grand jury charges no officers in Breonna Taylor death MORE (I-Vt.), all of whom have been on the campaign trail for months longer than Biden.

Harris has spent roughly $1.43 million on Facebook and Google ads since jumping into the presidential race in January. Last week, she dropped about $350,000, quadrupling her spending from the previous week.

Warren spent $131,000 on Facebook and Google ads last week, bringing her total Facebook and Google ad spending to $1.42 million since she announced her candidacy on New Year’s Eve, according to the data.

Biden’s spending in the days after launching his presidential campaign nearly matches that of Sanders, who has spent roughly $1.22 million advertising on the two platforms since his February campaign announcement. Last week, the Vermont senator spent about $57,000 on Facebook and Google ads.

The Facebook and Google data was compiled by ACRONYM, a progressive group that focuses on digital advertising organizing.

The deluge of spending by Biden and others underscores the outsize role digital outreach and social media are expected to play in the 2020 presidential contest.

Biden easily took the title for top political ad spender on Google last week, pumping $123,000 into the platform, nearly double what President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE’s joint fundraising committee, Trump Make America Great Again Committee, spent on Google advertising, according to data from the tech company.

Biden raised roughly $6.3 million in the 24-hour period after announcing his presidential bid last month, giving him the largest first-day haul of any declared Democratic presidential candidate.