A top Donald 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 adviser in Florida says the campaign has "dropped the ball" on reaching out to black voters in the state.

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Sean Jackson, head of the Black Republican Caucus of Florida, said the state campaign doesn't seem to care about outreach to African-American voters.

"Mr. Trump really does have a sincere, passionate interest in black outreach, but his campaign staff has dropped the ball," Jackson told the Miami New Times.

"I have been saying repeatedly that you cannot go into a black community in the ninth hour of a campaign and ask them to vote for a GOP candidate," Jackson said.

"The party has done a piss-poor job of courting the black vote over 50 years. So you have to have more vested interest in time and in your financial effort for the whole campaign, not just in the last 100 days."

Trump in recent days has made a direct appeal to African-American voters, controversially asking them what they have to lose by voting for him.

"You're living in poverty; your schools are no good; you have no jobs; 58 percent of your youth is unemployed. What the hell do you have to lose?" Trump asked Friday during a rally in Michigan.

Trump, the Republican presidential nominee, has long struggled to gain support within the African-American community. A recent NBC News poll showed Trump with 1 percent support among black voters.