President Donald Trump used Twitter on Wednesday morning to react to Tuesday's gubernatorial primary elections in Florida, calling the Democratic nominee, Andrew Gillum, a "failed Socialist."

Trump also predicted that Gillum would lose to his pick, GOP Rep. Ron DeSantis, in November's general election.

Gillum, the mayor of Tallahassee, could become Florida's first black governor.

President Donald Trump used Twitter on Wednesday morning to react to Tuesday's gubernatorial primary elections in Florida, calling the Democratic nominee, Andrew Gillum, a "failed Socialist."

Trump also predicted that Gillum, a progressive, would lose badly in November's general election to his pick, GOP Rep. Ron DeSantis.

"Not only did Congressman Ron DeSantis easily win the Republican Primary, but his opponent in November is his biggest dream....a failed Socialist Mayor named Andrew Gillum who has allowed crime & many other problems to flourish in his city," Trump tweeted. "This is not what Florida wants or needs!"

Trump added that Republicans' victories in Tuesday night's primaries in Arizona, Oklahoma, and Florida were big for the GOP.

"Big Election Wins last night!" Trump tweeted. "The Republican Party will MAKE AMERICA GREAT AGAIN! Actually, it is happening faster than anybody thought possible! It is morphing into KEEP AMERICA GREAT!"

Gillum, 39, the mayor of Tallahassee, defeated the establishment candidate Rep. Gwen Graham in Florida's Democratic primary. If elected, Gillum, who is backed by Sen. Bernie Sanders, will be the Sunshine State's first black governor.

DeSantis, also 39, defeated the state's agriculture commissioner, Adam Putnam, in Florida's Republican primary. The conservative congressman's campaign has been defined by his enthusiastic support for Trump.

Trump tweeted his congratulations to DeSantis on Tuesday night.

"Such a fantastic win for Ron DeSantis and the people of the Great State of Florida," Trump said. "Ron will be a fantastic Governor. On to November!"

Many are viewing the Florida race as a referendum of Trump versus Sanders.