Florida gubernatorial candidate Ron DeSantisRonald Dion DeSantisSaudi officer ripped US support of Israel in tweet before naval base shooting: report The Hill's Morning Report - Sponsored by AdvaMed - A crucial week on impeachment FBI identifies Pensacola shooter as Saudi Royal Saudi Air Force second lieutenant MORE's (R) campaign is pushing back against newly unearthed tweets that showed a Republican activist and campaign ally calling former President Obama a racial slur.

Politico on Thursday reported that Steven Alembik, who has donated more than $20,000 to DeSantis, called Obama the n-word and a Muslim in a since-deleted tweet.

“We’ve said it before, we’ll say it again: we adamantly denounce this sort of disgusting rhetoric,” DeSantis campaign spokesman Stephen Lawson told Politico in a statement.

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Alembik acknowledged to the news outlet that he fired off a tweet on Sept. 8 in response to a Republican National Committee (RNC) post that highlighted Obama's criticism that the GOP had become a party of resentment and paranoia.

“Without a hint of irony, Obama smears President TrumpDonald John TrumpRepublicans consider skipping witnesses in Trump impeachment trial Bombshell Afghanistan report bolsters calls for end to 'forever wars' Lawmakers dismiss Chinese retaliatory threat to US tech MORE’s 63 million Republican voters as divisive & resentful,” the RNC wrote.

Alembik then quoted the tweet and wrote: “F--- THE MUSLIM N-----," according to Politico.

Alembik insisted that neither he nor DeSantis are racist and said he wrote the tweet in anger.

The tweet marks the latest instance where race has become an issue in the Florida gubernatorial contest between DeSantis and Tallahassee Mayor Andrew Gillum (D), who is black.

The day after each candidate won their respective primary, DeSantis, a recently departed U.S. congressman, urged voters not to “monkey this up” by voting for Gillum in the November election.

His comments prompted an immediate backlash, with critics suggesting the remarks had racial undertones or were outright racist.

DeSantis denied that race had anything to do with his comments, but instead argued he was focusing on "ideas and principles."

Days later, Gillum was the target of a robocall paid for by an Idaho-based white supremacist organization. The phone recording features a man pretending to be Gillum speaking in an exaggerated accent as jungle noises play in the background.

Both Gillum’s and DeSantis’s campaigns have condemned the message.