Americans elected Barack Obama to a second term Tuesday, with the president capturing or on the verge of winning all of the key states that had been at the center of his hard-fought campaign against Republican Mitt Romney.
"Whether I earned your vote or not, I have listened to you," Obama said early Wednesday at a speech before thousands of supporters in Chicago. "I have learned from you. And you've made me a better president.
President Barack Obama and First Lady Michelle Obama embrace Vice President Joe Biden and Dr. Jill Biden moments after the television networks called the election in their favor, while watching election returns at the Fairmont Chicago Millennium Park
Credit Pete Souza / White House
Mitt Romney has conceded the election and President Obama has been re-elected. In Colorado, another ballot issue of national attention, Amendment 64, has passed.
Supporters attend a Mitt Romney rally Monday in Columbus, Ohio.
Credit Emmanuel Dunand / AFP/Getty Images
As Americans go to the polls, one of the closest presidential races in years may be determined by a state in the Midwest and a hurricane named Sandy.
After a campaign that has cost some $6 billion, the two candidates are in the same place they started: with President Obama a smidgen ahead of challenger Mitt Romney, so close that differences are in most cases statistically insignificant.