Controversial Republican front- runner Donald Trump on Sunday exuded confidence that he was on his way to win the party’s presidential nomination, defying the projection of political pundits who have been "wrong forever".

"So far, I’m really on my way," Trump told CNN after he netted back to back wins in South Carolina and New Hampshire following a close second-place finish in the Iowa caucuses.

Trump’s win on Sunday gave him a critical burst of momentum heading into Nevada’s Republican caucuses on Tuesday.

When asked if a strong opposition inside the party against him would result in a brokered convention in Cleveland, Ohio in July, Trump said he doesn’t think "we’re going to have a brokered convention. I think it is unlikely." 

Trump said it was only the political pundits who were saying that he would not win the presidential nomination.

"I think most of the smart people are saying there’s not going to be a convention. Interestingly, the ones who say there’s going to be a convention, usually, they are the pundits that have been wrong forever, the ones that have been wrong about me," he said.

Referring to his win in the South Carolina primary, Trump said he was surprised that he won all Congressional districts, despite rivals launching blistering ad campaigns against him.

"I will say that I am surprised. There are seven and I won all seven. And therefore, I got every delegate. Every single delegate, which is sort of unheard of," Trump told MSNBC.

The 69-year-old real-estate tycoon claimed he will bring Democratic party members to his fold if he gets the nomination and will ultimately win the November presidential elections.

"As a candidate, I will bring over many, many Democrats.

We’re going to bring over a lot of Democrats. We’re going to bring over a lot of independents. Nobody else will. In all fairness, the other candidates, they will never bring over independents," he said.

"We’re going to bring over tremendous numbers. We’re going to bring over youth. Bernie’s not going to make it, in my opinion. And I never thought he would. Hillary won’t make it.

Frankly, if she gets indicted, that’s the only way she is going to be stopped," he said.

"I think it’s going to be between Hillary and myself. They say that it will be the largest voter turnout in the history of United States elections. And I want to tell you, that’s a great compliment to the country, because we have such a low voter turnout compared to a lot of other countries," he said.

"I’m going to win. I’m going to win places like Michigan that the Republicans can’t even think of," he claimed.