As Super Tuesday draws to a close, the first candidate to reflect on the day is Republican Mike Huckabee who tells supporters: "We are still on our feet... we are getting there."
Republican Mitt Romney announced: "One thing's clear: this campaign's going on."
Hillary Clinton told voters: "After seven years... you're ready for a president who'll bring your values, your dreams and your voice to your White House."
In Arizona John McCain stated: "I think we must get used to the idea that we are the Republican Party front-runner for the presidency of the United States.
Democrat Barack Obama told an ecstatic crowd of supporters: "Our time has come, our movement is real and change is coming to America."
The candidates waited for results while members of their campaign teams monitor news reports to see the latest predictions.
Early predictions indicated a win in Georgia and Illinois for Democratic Senator Barack Obama, seen here with his wife having cast his vote in Illinois.
Republican Mitt Romney and his wife Ann arrived to vote at City Hall in Belmont, Massachusetts.
California's Governor Arnold Schwarzenegger and first lady Maria Shriver said goodbye and went their separate ways after casting their votes.
Republican Mike Huckabee campaigned in Charleston, West Virginia, prior to winning the state's nomination.
Carlos Macias (l) is assisted by election official William Butts in Boyle Heights, Los Angeles, California.
Senator John McCain became the front-runner to win the Republican nomination, ahead of Mitt Romney.
Senator Hillary Clinton turned to face waiting media before voting in Chappaqua, New York.
Having cast her vote Senator Hillary Clinton was greeted by an enthusiastic supporter.
Not everyone enjoyed the day. Ethan Yost attempts to get out of the voting booth as his mother Maria tries to cast her ballot in Greenwood.
At the Mardi Gras in the French Quarter of New Orleans two women declare: "Everywhere else it's Super, Super Tuesday".
A US national in London waits to cast his vote for Barack Obama.
Republican hopeful Mitt Romney met supporters on the campaign trail in Ohio.
Sarah Hussein Obama, the grandmother of Democratic presidential hopeful Barack Obama, sits to be photographed in the living room of her house in the village of Kogelo, Kenya.