Brett O'Donnell, right, at the Republican National Convention in St. Paul, Minn., Sept. 4, 2008. O'Donnell worked with GOP presidential candidate John McCain as his debate coach. Charles Dharapak/ASSOCIATED PRESS hide caption

itoggle caption Charles Dharapak/ASSOCIATED PRESS

President Obama traveled in the presidential limo with his dog, Bo. Adviser David Axelrod tweeted this photo from the White House Flickr account to tweak the Romney campaign. Pete Souza/White House hide caption

itoggle caption Pete Souza/White House

Fresh from a confident debate performance, former Massachusetts Gov. Mitt Romney was jaunty as he campaigned at the Hispanic Leadership Network's lunch in Miami on Friday. Charles Dharapak/AP hide caption

itoggle caption Charles Dharapak/AP

Rick Santorum (from left), Newt Gingrich and Mitt Romney debate Thursday night in Jacksonville, Fla. Joe Raedle/Getty Images hide caption

itoggle caption Joe Raedle/Getty Images