Article Photos: Florida highway offers clues to presidential race



  FILE - In a Monday, Aug. 13, 2012 file photo, Republican presidential candidate, former Massachusetts Gov. Mitt Romney, speaks at a campaign event in Miami. Behind him, from left are, his son Craig, Rep. Mario Diaz-Balart, R-Fla., and Sen. Marco Rubio, R-Fla. Florida's economy is center stage in President Barack Obama and Romney's high-stakes campaign for the rich trove of 29 electoral votes. One of the biggest prizes still up for grabs, this state, a hard-fought White House battleground in 2000, could be just as pivotal this year. (AP Photo/Mary Altaffer, File)

FILE - In a Monday, Aug. 13, 2012 file photo, Republican presidential candidate, former Massachusetts Gov. Mitt Romney, speaks at a campaign event in Miami. Behind him, from left are, his son Craig, Rep. Mario Diaz-Balart, R-Fla., and Sen. Marco Rubio, R-Fla. Florida's economy is center stage in President Barack Obama and Romney's high-stakes campaign for the rich trove of 29 electoral votes. One of the biggest prizes still up for grabs, this state, a hard-fought White House battleground in 2000, could be just as pivotal this year. (AP Photo/Mary Altaffer, File)