Unlike Gov. Rick Scott, who is keeping his distance from the polarizing president while running for U.S. Senate, DeSantis, 39, is among the most vocal and high profile Trump cheerleaders in Washington.
Buoyed by an endorsement from President Donald Trump, Rep. The two Republican and five Democratic candidates have poured $150 million a contest whose victor will have implications for decades to come: congressional redistricting is scheduled for Florida in 2020 and the state governor wields veto power.
Trump, who captured the battleground state of Florida by just more than 1 percentage point in the 2016 White House race, tweeted his congratulations to DeSantis after the victory and said he would be "a fantastic governor".
Florida voters on Tuesday will select the nominees for governor, agriculture commissioner, attorney general, and several congressional seats.More news: Late Senator John McCain Remembered as 'True Supporter of Israel'
DeSantis tied himself closely to Trump in the primary, and it paid off.
The Democratic primary is now close between former Rep. Gwen Graham - a centrist and daughter of former governor and Sen. Nelson ran unopposed for the nomination. He was considered a shoo-in for the Republican nomination. Former congresswoman Gwen Graham, a relatively moderate Democrat and the daughter of former Governor and Senator Bob Graham, holds a slight lead over Tallahassee Mayor Andrew Gillum, who is backed by Bernie Sanders.
The primaries in Arizona and Florida on Tuesday are the last big day of state primaries before November's elections.
Gillum won the primary Tuesday after upsetting a field of better-known and better funded candidates.