President Trump Donald John TrumpBiden leads Trump by 36 points nationally among Latinos: poll Trump dismisses climate change role in fires, says Newsom needs to manage forest better Jimmy Kimmel hits Trump for rallies while hosting Emmy Awards MORE hit billionaire businessman 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 ahead of Saturday's presidential primary in South Carolina, where Steyer is hoping for a strong showing.

“To the people of South Carolina, Tom Steyer is a joke, laughed at by everyone, a total incompetent. He made money in coal, now he ‘hates’ coal. Did you see him fawning over Crazy Bernie? Has no chance, a loser for South Carolina, doesn’t deserve your vote!” Trump tweeted.

To the people of South Carolina, Tom Steyer is a joke, laughed at by everyone, a total incompetent. He made money in coal, now he “hates” coal. Did you see him fawning over Crazy Bernie? Has no chance, a loser for South Carolina, doesn’t deserve your vote! — Donald J. Trump (@realDonaldTrump) February 28, 2020

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Steyer has cast himself as the “climate change candidate,” saying the issue would be his No. 1 priority if he were elected president. Among other things, Steyer has proposed eliminating energy produced by coal and fossil fuels and producing 100 percent clean electricity by 2040.

Dismal showings in Iowa, New Hampshire and Nevada have cast doubt as to Steyer’s electability after he broke the top five only in the Silver State. However, Steyer has invested heavily in South Carolina with a particular focus on ginning up support from black voters, who are estimated to make up about 60 percent of the state’s Democratic primary electorate.

Steyer has spent more than $1.5 million on Facebook ads in the Palmetto State in the past three months and $643,949 in roughly the last 30 days. The spending has accounted for 68 percent of all dollars spent on the ads in South Carolina in the last 30 days among Democratic presidential contenders.

The spending surge comes as Steyer moved to third place in the RealClearPolitics polling average in South Carolina, though he still trails former Vice President Joe Biden Joe BidenBiden leads Trump by 36 points nationally among Latinos: poll GOP set to release controversial Biden report Can Donald Trump maintain new momentum until this November? MORE and Sen. Bernie Sanders Bernie SandersNYT editorial board remembers Ginsburg: She 'will forever have two legacies' Two GOP governors urge Republicans to hold off on Supreme Court nominee Sanders knocks McConnell: He's going against Ginsburg's 'dying wishes' MORE (I-Vt.) by several points.