According to a poll conducted by the Associated Press, Hillary Clinton has secured enough delegates to clinch the Democratic nomination, becoming the first women in US history to lead a major political party.

The total of 2,383 delegates was reached on the eve of Tuesday’s voting, which will mark precisely eight years since she conceded her campaign to the current US president, Barack Obama.

Clinton’s total is comprised of 1,812 pledged delegates and 571 superdelegates, which have told the Associated Press that they will “unequivocally” support Hillary Clinton in this summer’s Democratic convention.

Clinton’s conceded, however, that she must still compete for every single remaining vote in her fight against Democratic rival Bernie Sanders. Sanders himself validated this statement during a rally on Monday, stating that a victory in California would give him the momentum he needs to continue the fight until the convention.

Bernie Sanders has repeatedly tried to sway the support of the superdelegates -who are unelected and capable of pledging themselves to whomever they choose- by arguing that he would make for a better candidate against the presumptive Republican candidate, Donald Trump.

Without the additional superdelegates the difference in between Clinton and Sanders is 291, with a total of 718 delegates still up for grabs in remaining states. Tuesday’s round of voting has the potential to complicate matters, with California alone having 475 delegates, a state which Sanders is projected to win.