Multiple media outlets are projecting Barack Obama as the winner of the presidential election.
CNN, NBC News, CBS News and FOX News are all reporting that Obama has defeated Republican challenger Mitt Romney.
Obama captured battleground Ohio from Romney and has edged ahead in other pivotal states.
At home in Chicago, the president all but claimed victory.
"This happened because of you. Thank you," he tweeted to supporters.
Romney is in Massachusetts after a long and grueling bid for the presidency. He led in the national popular vote with 41 million votes, or 50 percent. Obama had 40 million, or 49 percent, with 59 percent of the precincts tallied.
But Obama led in the competition for electoral votes, where it mattered most.
Material from the Associated Press was used in this report.
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