Republican presidential front-runner Donald Trump has won the primary elections in the US state of Indiana, marching towards his party's nomination in the 2016 presidential race, media projections say.

As the polls closed in the Midwestern US state of Indiana on Tuesday evening, early results in primary elections showed that Trump has led with 61.4 percent compared to only 23.8 percent for Texas Senator Ted Cruz and 11.7 percent for Ohio Governor John Kasich.

A victory in Indiana could almost secure the GOP nomination for both the New York businessman and the former secretary of state.

After the polls closed, Cruz ended his campaign due to a weak performance, paving the way for Trump’s nomination.

Reince Priebus, the Republican Party chief, declared Trump the presumptive Republican presidential nominee, after his main rival Ted Cruz dropped out of the race.

"Donald Trump will be presumptive @GOP nominee, we all need to unite and focus on defeating @HillaryClinton," Priebus said in a tweet.

On the Democratic side, Vermont Senator Bernie Sanders was projected as the winner of the state with 53.2 percent over his rival, former Secretary of State Hillary Clinton, standing at 46.8 percent.

The former first lady entered the Indiana primary with 1,645 pledged delegates, to 1,318 for Sanders. Factoring in superdelegates as well, her lead expanded to more than 800 total delegates, according to the Associated Press.

Speaking in Louisville on Tuesday night, Sanders said, "in primary after primary, caucus after caucus, we end up winning the vote of people 45 years of age and younger," proving that "the ideas that we are fighting for are the ideas of the future of America and the future of the Democratic party."

I'm really focused on moving into the general election ... We're going to have a tough campaign," said the Vermont senator, calling his campaign "a political revolution."

By Press TV