Republican presidential nominee Mitt Romney pauses while speaking at a campaign rally at the Patriot Center at George Mason University in Fairfax, Va., on Monday. Charles Dharapak/AP hide caption

itoggle caption Charles Dharapak/AP

Floridians stand in line during the last day of early voting in Miami on Saturday. A judge extended early-voting hours in one Florida county Sunday after Democrats sued to allow more time. Alan Diaz/AP hide caption

itoggle caption Alan Diaz/AP

The "mystery monkey," now known as Cornelius, while he was on the loose in 2010. Mystery Monkey of Tampa Bay Facebook page hide caption

itoggle caption Mystery Monkey of Tampa Bay Facebook page

President Obama turned a planned campaign speech in Fort Myers, Fla., into a brief statement about the shooting rampage. He asked the audience to join him in a moment of silence for the victims. Mandel Ngan/AFP/Getty Images hide caption

itoggle caption Mandel Ngan/AFP/Getty Images

Sen. Marco Rubio, R-Fla., delivers a speech during the annual Conservative Political Action Conference in February in Washington. Win McNamee/Getty Images hide caption

itoggle caption Win McNamee/Getty Images

Newt Gingrich greets supporters during a campaign appearance at a restaurant in Reno, Nev., on Wednesday. He said Thursday he will challenge Florida's winner-take-all scheme for awarding delegates. Robert Galbraith /Reuters /Landov hide caption

itoggle caption Robert Galbraith /Reuters /Landov

Mitt Romney at his state campaign headquarters Tuesday in Tampa, Fla. Joe Raedle/Getty Images hide caption

itoggle caption Joe Raedle/Getty Images