U.S. Rep. Connie Mack IV of Fort Myers has become the frontrunner in a three-way contest for the Republican nomination for the U.S. Senate, a Quinnipiac University poll released Thursday shows.

The conservative congressman with a famous name received 40 percent support from a group of 742 registered Republican voters in a random telephone survey compared to 8 percent for Tea Party favorite Mike McCalister and 7 percent for Fort Lauderdale attorney George LeMieux, who served the final 16 months of former U.S. Sen. Mel Martinez’s term,. LeMieux, who was appointed by former Gov. Charlie Crist to fill the vacancy upon Martinez’s surprising decision to not finish his six-year term, did not seek re-election for the seat now held by freshman U.S. Sen. Marco Rubio of Miami.

“Mack’s lead is pretty formidable with three months until the primary,” pollster Peter Brown said. “He retains an overwhelming lead.”

Quinnipiac’s survey of Republican voters taken May 15-21 has a margin of error of plus or minus 3.6 percentage points.

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