Republicans not concerned on Russia; Gwen Graham in lead.

Gwen Graham has developed a small lead in the contest for the Democratic nomination for governor as Jeff Greene has pulled himself into the top tier of contenders.

Graham has the support of 20 percent of Florida’s Democratic voters in a Florida Atlantic University poll released Wednesday.

Philip Levine has 16 percent and Jeff Greene 14 percent, effectively a tie for second place.

“There’s three candidates that are sort of creating that first tier, with Graham, Greene and Levine,” said Kevin Wagner, an FAU political scientist. But, he added, “none of the candidates is far ahead of any of the others, which means there is a lot of opportunity.”

The other two major Democratic candidates are in single digits: 9 percent for Chris King and 7 percent for Andrew Gillum.

Wagner said Graham’s standing is significant.

“Gwen Graham has actually managed to stay largely at the top of this race, despite what was a pretty disruptive event of Greene entering it — especially when you consider how much money Greene and Levine have spent so far.”

The latest survey of 271 Democratic registered voters from the Florida Atlantic University Business and Economics Polling Initiative has a margin of error of plus or minus 6 percentage points, which means the contest could be significantly closer — or much farther apart.

The survey was conducted online and through automated calls to people with landline telephones on Friday and Saturday.

About one-third of Democratic voters — 31 percent — are undecided. Voters in some counties have already received their mail ballots; in-person early voting starts in mid-August. The primary is Aug. 28.

Greene, a billionaire real estate investor from Palm Beach, wasn’t even a candidate when FAU took its last poll in May.

Since then, he’s pumped money into television advertising and established himself as a contender in the race. He hasn’t held elected office before but did run for the Democratic nomination for U.S. Senate in 2010.

Graham, a former congresswoman, has improved her standing since the May poll, where she had 15 percent.

Levine, a former Miami Beach mayor who has also spent heavily on television ads, was little changed from May, when he had 16 percent.

King, a Winter Park businessman, and Gillum, the mayor of Tallahassee, are virtually unchanged from May. King is down 1 percentage point and Gillum is up 1 percentage point.