Florida Gov. Charlie Crist, running as an independent in the wide open Senate race, continues to hold a lead over Republican nominee Marco Rubio, according to a new Quinnipiac poll. Their support levels have changed little since the last poll in early June.

In hypothetical general election match-ups, both billionaire Jeff Greene and Rep. Kendrick Meek -- whom Greene leads by 10 points in the Democratic primary -- trail Crist and Rubio by significant margins.

With Greene in the race, Crist leads with 37%, followed by Rubio with 32% and Greene 17%. If Meek is the Democratic nominee, Crist's support extends to 39%, Rubio 33% and Meek 13%.

As Qunnipiac notes in the press release announcing the poll, "Crist's lead is based on getting half the independent voters, about 20 percent of Republicans and about 40 percent of Democrats." His name identification also remains far higher than his opponents, with 38% saying they don't know enough about Rubio to form an opinion of him and 64% saying the same about both Greene and Meek.

Crist now leads by 4.2 points in the RCP Average with Meek in the race and 5.3 points with Greene in the race.

Meanwhile, the governor's race is equally competitive. Should Rick Scott be the Republican nominee (he currently leads in polling), he would hold a slight lead in the general election against Democrat Alex Sink and independent Bud Chiles. Scott would take 29% to 27% for Sink and 14% for Chiles. If Attorney General Bill McCollum takes the GOP nomination, he would lead with 27%, followed closely by Sink with 26% and Chiles with 14%.

According to Quinnipiac assistant director Peter A. Brown, Sink has been the "beneficiary of the millions spent on negative ads" in the GOP race between McCollum and Scott. "Whether that will remain the case once the Republican nomination is settled we'll see."

The survey of 969 registered voters was conducted July 22 – 27 with a margin of error of +/- 3.2%.

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