TAMPA, FL - AUGUST 27: Law enforcement officers block a downtown street during a protest on August 27, 2012 in Tampa, Florida. The demonstration was being held just before of the start of the Republican's nominating convention which will hold its first session on August 28. The convention was scheduled to start on August 27 but was pushed back one day as Tropical Storm Isaac threatens to hit the Tampa area. (Photo by Tom Pennington/Getty Images)

TAMPA, FL - AUGUST 27: Law enforcement officers block a downtown street during a protest on August 27, 2012 in Tampa, Florida. The demonstration was being held just before of the start of the Republican's nominating convention which will hold its first session on August 28. The convention was scheduled to start on August 27 but was pushed back one day as Tropical Storm Isaac threatens to hit the Tampa area. (Photo by Tom Pennington/Getty Images)

Law enforcement officers block an intersection as activists march through downtown before the start of the Republican National Convention in Tampa, Florida, August 27, 2012. REUTERS/Steve Nesius

TAMPA, FL - AUGUST 27: Law enforcement officers wearing riot gear cordon off the scene where a peaceful march ended during the National Republican Convention on August 27, 2012 in downtown Tampa, Florida. Commercial bus cancellations due to Tropical Storm Isaac have prevented many of the expected demonstrators from being present. (Photo by Edward Linsmier/Getty Images)

Law enforcement officers block an intersection as activists march through downtown before the start of the Republican National Convention in Tampa, Florida, August 27, 2012. REUTERS/Steve Nesius

TAMPA, FL - AUGUST 27: Law enforcement officers block a downtown street during a protest on August 27, 2012 in Tampa, Florida. The demonstration was being held just before of the start of the Republican's nominating convention which will hold its first session on August 28. The convention was scheduled to start on August 27 but was pushed back one day as Tropical Storm Isaac threatens to hit the Tampa area. (Photo by Tom Pennington/Getty Images)

An activist lies in front of a police-line during a protest on the streets outside the Republican National Convention in Tampa Florida August 27, 2012. Say goodbye to the four-day national political convention, a dinosaur that could be nearing extinction. Republicans have cut their Tampa, Florida, convention from the traditional four days to three because of a threatening storm, just as they did four years ago when a hurricane hit Louisiana. Democrats had already reduced next week's convention to three days. REUTERS/Adrees Latif

A police officer orders a protester from the movement "99%ers" not write slogans on the sidewalk during a rally in downtown Tampa before the start of the Republican National Convention in Tampa, Florida August 26, 2012. Due to incoming severe weather and possible hurricane conditions expected to hit the state by Monday, the Republicans have decided to cut short their National Convention by one day. AFP PHOTO/MLADEN ANTONOV

TAMPA, FL - AUGUST 27: A man skateboards past police with a sign during a planned march on August 27, 2012 in Tampa, Florida. The demonstration was being held just before of the start of the Republican's nominating convention which will hold its first session on August 28. The convention was scheduled to start on August 27 but was pushed back one day as Tropical Storm Isaac threatens to hit the Tampa area. (Photo by Tom Pennington/Getty Images)

TAMPA, FL - AUGUST 27: Law enforcement officers block a downtown street during a protest on August 27, 2012 in Tampa, Florida. The demonstration was being held just before of the start of the Republican's nominating convention which will hold its first session on August 28. The convention was scheduled to start on August 27 but was pushed back one day as Tropical Storm Isaac threatens to hit the Tampa area. (Photo by Tom Pennington/Getty Images)

TAMPA, FL - AUGUST 27: Law enforcement officers wearing riot gear leave the scene where a peaceful march ended during the National Republican Convention on August 27, 2012 in downtown Tampa, Florida. Commercial bus cancellations due to Tropical Storm Isaac have prevented many of the expected demonstrators from being present. (Photo by Edward Linsmier/Getty Images)

Police officers stand in a downpour as they watch demonstrators marching through the streets of Tampa, Fla., to protest the Republican National Convention on Monday, Aug. 27, 2012. (AP Photo/Chris O'Meara)

A policeman, standing in front of dozens of others in riot gear in the background, records a protest march which was hit by a downpour outside the Republican National Convention in Tampa Florida August 27, 2012. Say goodbye to the four-day national political convention, a dinosaur that could be nearing extinction. Republicans have cut their Tampa, Florida, convention from the traditional four days to three because of a threatening storm, just as they did four years ago when a hurricane hit Louisiana. Democrats had already reduced next week's convention to three days. REUTERS/Adrees Latif

TAMPA, FL - AUGUST 27: Police watch protesters march from behind a barricade during the Republican National Convention on August 27, 2012 near downtown Tampa, Florida. Commercial bus cancellations due to Tropical Storm Isaac have prevented many of the expected demonstrators from arriving in the city. The convention will hold its first session on August 28. It was scheduled to start on August 27 but was pushed back one day as the storm threatens to hit the Tampa area. (Photo by Edward Linsmier/Getty Images)

TAMPA, FL - AUGUST 25: Florida National Guard members guard the Tampa Police headquarters in downtown on August 25, 2012 in Tampa, Florida. Tampa area residents wait for Tropical Storm Isaac as they prepare for the Repulican National Convention which will be held in Tampa during the week of August 27th. (Photo by Tom Pennington/Getty Images)

Florida National Guard troops stand guard along barricades erected around the Tampa Police Department in Tampa, Fla., Saturday, Aug. 25, 2012. A heavy presence of law enforcement officers are in place to provide security for the Republican National Convention which begins Monday in Tampa. (AP Photo/Dave Martin)

TAMPA, FL - AUGUST 27: Members of the National Guard patrol outside the Tampa Bay Times Forum on August 27, 2012 in Tampa, Florida. Tampa is preparing for the start of the Republican National Convention at the Forum. The RNC is scheduled to convene on Monday and will hold its first session on August 28 as Tropical Storm Isaac has caused disruptions due to its proximity to the city. (Photo by Spencer Platt/Getty Images)