(CNN) - Hillary Clinton is the clear 2016 frontrunner in the nation's largest presidential battleground state, according to a new poll.
A Quinnipiac University survey of Florida voters indicates the former secretary of state, who's seriously considering a second bid for the White House, has leads from seven to 21 percentage points over potential GOP presidential candidates in possible 2016 showdowns.
"Former Secretary of State Hillary Clinton may be taking some criticism recently in the news media and among some liberal Democratic precincts, but nothing has changed among average voters in Florida where she remains queen of the political prom," said Peter A. Brown, assistant director of the Quinnipiac University poll.
According to the survey, which was released Thursday morning, Clinton also has an overwhelming lead in the hunt for the Democratic nomination, with former two-term Florida Gov. Jeb Bush and the state's junior U.S. senator, Marco Rubio, leading the pack of potential GOP contenders.
Two-thirds of Sunshine State Democratic primary voters questioned in the survey say they'd back Clinton for their party's nomination, followed by Vice President Joe Biden and Sen. Elizabeth Warren of Massachusetts each at eight percent. Biden is mulling another presidential bid while Warren has said numerous times that she's not running in 2016. Other potential candidates registered at one percent or less.
Twenty-one percent of Republicans say they'd back Bush in the primary, followed by Rubio at 18%. Bush was at 27% and Rubio at 11% among Florida Republicans in Quinnipiac's May poll.
Sen. Ted Cruz of Texas is at 10% in the new poll, with Sen. Rand Paul of Kentucky standing at 8%, former Arkansas Gov. Mike Huckabee – who ran for the 2008 nomination – at 7%, and New Jersey Gov. Chris Christie at 6%. None of the other possible contenders top 5%.
In hypothetical 2016 general election matchups, Sunshine State voters back Clinton over Bush 49%-42%. The poll indicates Clinton leads Ryan by 13 points, Rubio by 14 points, Paul by 16 points and Christie by 21 points.
A Quinnipiac poll in Colorado released last week, another swing state, indicated much closer 2016 general election showdowns between Clinton and potential GOP candidates.
As for the current occupant in the White House, the survey indicates President Barack Obama has a 44%-52% approval/disapproval rating among Florida votes, compared to 46%-50% in May.
The Quinnipiac University poll was conducted July 17-21, with 1,251 registered voters in Florida questioned by telephone. The survey's overall sampling error is plus or minus 2.8 percentage points.
CNN Political Editor Paul Steinhauser contributed to this report