Nikki Haley, the Republican candidate for the presidency, has finally won her first primary in the country's capital, Washington, DC, defeating former president and Republican candidate Donald Trump, AFP reported.
She has become the first woman in Republican history to win a primary.
Haley's symbolic victory in the nation's capital comes just ahead of a decisive day in the long United States nominating process: Super Tuesday, in which 15 states and one territory vote.
Washington is a solidly Democratic town with a small number of registered Republicans.
According to the BBC, Haley won 62.9% of the vote, compared to Trump's 33.2%.
The Haley campaign put out a statement saying, "It's not surprising that Republicans closest to Washington dysfunction are rejecting Donald Trump and all his chaos."
In response, Trump's campaign said,"Tonight's results in Washington DC reaffirm the object of President Trump's campaign, he will drain the swamp and put America first."
The Super Tuesday milestone is expected to leave Trump a hair's breadth from securing the Republican Party's presidential nomination. He has already swept all the early state primaries.
Super Tuesday is seen as the last real chance for Haley to upend the former president's march toward becoming the party's flagbearer once again, against Biden.