Editor's note: The 2012 presidential race is CNN Chief National Correspondent John King's seventh campaign. He analyzed what challenger Mitt Romney and Republicans needed to do in their convention last week.
CHARLOTTE, North Carolina (CNN) - It is a very different year – and very different mood - as Democrats gather for their convention. But there is one carryover from 2008: To win the White House, Barack Obama will once again have to make history.
Four years ago, it was a groundbreaking victory for the first African-American to win the presidency. Now, to win four more years, it is a less glamorous but still significant barrier in his way: only Franklin Roosevelt was re-elected with unemployment this high.FULL STORY