Sen. 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.) will campaign in South Carolina for the first time next week amid rumors of a potential 2020 presidential bid.

Harris, who was first elected to the Senate in 2016, will be stumping for Democratic candidates in Columbia and Greenville, her office said on Wednesday.

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South Carolina is an early-voting state and the first Southern state to hold a primary during the primary season.

Politico first reported on Harris's plans to campaign in South Carolina.

Sen. Cory Booker Cory Anthony BookerBipartisan praise pours in after Ginsburg's death DHS opens probe into allegations at Georgia ICE facility Democratic lawmakers call for an investigation into allegations of medical neglect at Georgia ICE facility MORE (D-N.J.), another potential 2020 contender, is slated to headline a Democratic fundraiser in South Carolina on Oct. 18.

Harris has raised more than $5 million this year for party candidates.

In addition to Booker, other potential White House hopefuls include Sen. 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.), Sen. 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.) and 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.