Remember when? Four years ago in photos

As this year's Republican National Convention gets set to kick off in earnest Tuesday, we look back at some of the most compelling images from the race for the White House four years ago. Seems like only yesterday...

U.S. President George W. Bush walks back to the Oval Office after making remarks at the White House in Washington on March 13, 2008. (REUTERS/Jim Young)

Democratic presidential hopeful Sen. Barack Obama speaks to a crowd of 75,000 at Waterfront Park in Portland, Oregon on Sunday, May 18, 2008.

Republican vice-presidential candidate Sarah Palin stands amid a sea of celebrating delegates at the Republican National Convention in St. Paul, Minn., Wednesday, Sept. 3, 2008. (AP Photo/Charlie Neibergall)

Republican presidential candidate John McCain makes his acceptance speech during the Republican National Convention in St. Paul, Minn., Thursday, Sept. 4, 2008. (AP Photo/Susan Walsh)

McCain with Palin after he accepted the presidential nomination at the 2008 Republican National Convention on Sept. 4, 2008. (REUTERS/John Gress)

Democratic presidential nominee Barack Obama with his wife Michelle, vice presidential nominee Joe Biden and his wife Jill on stage with Obama's daughters Sacha (centre left) and Malia following Obama's address to the Democratic National Convention 2008 at the Invesco Field in Denver, Colorado. (PAUL J. RICHARDS/AFP)

Obama waves to the crowd at a rally in the rain at the University of Mary Washington in Fredericksburg, Va. Saturday, Sept. 27, 2008. (AP Photo/Alex Brandon)

Obama speaks at a campaign rally in North Carolina, Oct. 19, 2008. (REUTERS/Jim Young)