RealClearPolitics.Com, which keeps an unofficial count of State wise delegates, today said Trump now has the support of 1,238 delegates, one more than the half way mark of 1237 to become nominee of the Republican party for the November general elections.
Trump, 69, who joined politics less than a year ago, is the sole Republican left in the race to the White House which was crowded with as many as 17 candidates at the start of the year.
Trump in his controversial speeches that dominated media headlines called Mexicans "rapists," vowed to construct a wall between the US and Mexico and impose a temporary ban on Muslim immigrants.
Trump and his potential Democratic rival Hillary Clinton, the former Secretary of State, are currently in a virtual tie according to most of the latest national polls.
Clinton has yet to clinch the nomination. She is facing a tough opposition from Senator Bernie Sanders from Vermont.
Meanwhile, the Democratic Party today announced to launch a "Stop Trump Fund" to prevent him from becoming the President of the United States.