Donald Trump today became the presumptive Republican presidential nominee after a sweeping win in Indiana that forced his nearest rival Ted Cruz to quit the race and the controversial billionaire was poised to clash with Democratic front-runner Hillary Clinton in November.
Clinton, however, suffered an upset defeat at the hands of Bernie Sanders in Indiana but the outcome was unlikely to slow the 68-year-old former secretary of state's march to the Democratic nomination.
By becoming the presumptive nominee, Trump, who joined politics only last year, has scripted history as he is now on course to be the first standard-bearer of the party since Dwight D Eisenhower, a five-star general and the commander of Allied Forces in Europe during World War II, who had not served in an elected office.
"I am honoured to be the presumptive nominee for the Republican Party. It is time to unite our party and defeat Hillary Clinton," 69-year-old real estate tycoon said in a message to his supporters after winning the Indiana primary.
Trump won 51 of the 57 delegates at stake in Indiana and now has 1,047 delegates in his kitty.
He is just short of 190 delegates, which he is expected to bag as the primary season moves into its last lap now and his main competitor Senator Cruz is out of the race.
Cruz, who has engaged in a bitter and nasty war of words with Trump, announced his decision to drop out of the race.
Trump, however, still faces opposition from Ohio Governor John Kasich, who has less than 200 delegates.
Kasich has made it clear that he is not dropping out of the race.
After Trump's win, the Republican National Committee (RNC) chairman Reince Priebus said that Trump would be the presumptive nominee and asked his party to rally behind him to defeat Clinton in the November polls.
"We are going to make America great again," a confident Trump told supporters at his campaign headquarters in New York as he announced to take on Clinton.
"We are going after Hillary Clinton. She will not be a great president. She will not be a good president. She would be a poor president. She does not understand trade," Trump said, giving a brief glimpse of his campaign against the likely Democratic presidential nominee.
Talking about Cruz, Trump described him as a tough competitor and appreciated his decision to withdraw from the race.
"I want to congratulate Ted Cruz. He is a tough smart competitor," he said of the Texas Senator with whom he had a bitter exchange of words hours before the result of the Indiana primary.
"Ted Cruz is one hell of a competitor. He is an amazing guy. He has got an amazing future. He is one tough competitor," Trump said.
