America is preparing for Super Tuesday, one of the most important days in the race to challenge Donald Trump for his seat in the White House.
Democrats in 14 states and one US territory will today vote on who they think the party should put forward for election.
As things stand Bernie Sanders leads the way but former vice president Joe Biden is hot on his heels after a big win in the South Carolina primary.
Meanwhile, two moderate candidates Amy Klobuchar and Pete Buttigieg have pulled out of the race and endorsed Mr Biden.
With millions of voters set to go to the polls today, Senator Elizabeth Warren and Billionaire Michael Bloomberg will also be hoping to pick up support.
In all, the votes of more than a third of delegates for the Democratic National Convention are up for grabs today.
A candidate needs the support of 1,991 delegates to get a nomination – with 1,357 to be awarded today.