NEW YORK - Donald Trump has stated that the political system is "stacked against me," and accused the Republican Party of conspiring to stop him from clinching the party's Presidential nomination.

At a special CNN town hall in New York City ahead of next Tuesday's crucial New York primary, Trump said: "I know the rules very well, but I know it's stacked against me by the establishment."

His comments elicited a tough response from Republican National Committee Chairman Reince Priebus, who tweeted: "Nomination process known for a year + beyond. It's the responsibility of the campaigns to understand it. Complaints now? Give us all a break."

The feud between Trump and rival Ted Cruz engulfed the RNC Tuesday night, after the GOP Presidential front-runner at CNN's town hall blasted "unfair" results in Colorado. He was swept there in the delegate hunt by Cruz at a party convention this weekend. A similar outcome emerged from Louisiana, where he won the primary but Cruz is seeking to sway delegates.

Those developments, Trump said: Were the result of establishment Republicans working against his campaign. "They changed the rules a number of months ago," Trump told CNN.

"You know why they changed the rules? Because they saw how I was doing and they didn't like it."

Trump, asserting the Republican Party is "100 per cent" controlled by the Republican National Committee, said that he believes the RNC is rooting against him.

"No, I don't think so," Trump said, responding to a question from Cooper on whether he believes the RNC does not want him to get the Republican nomination.

Without mentioning Trump by name, Priebus tweet Tuesday night sent a clear message about how he felt about the front-runner's complaints.

It also further escalates an ongoing feud between the Republican front-runner and Priebus.

In an interview with The Hill newspaper earlier in the day, Trump called the Repubican nominating process a "scam."

"It's a disgrace for the party. And Reince Priebus should be ashamed of himself," Trump had said. "He should be ashamed of himself because he knows what's going on."

In the rare family appearance, Trump's wife, Melania, and children - Ivanka, Eric and Donald Jr. and Tiffany - shared the spotlight with the Republican Presidential front-runner at Tuesday's town hall, answering questions from New York voters in the audience.

Ivanka Trump called politics "a vicious industry," and said that she and her siblings are committed to supporting their father.

"We know what he could bring to the country so we're just happy to support him," she said.

Tiffany Trump, the daughter of Trump and his second wife Marla Maples, said: "Whenever my father puts his heart and soul into something, he goes full force."

Eric Trump said his father was perhaps his "best friend in the entire world." "He's been the greatest father in the world. He's an amazing deal maker," he said.

Responding to criticism Trump has received on the way he has spoken about women, Ivanka said her father's respect for women was evident in how he raised her and her sister, Tiffany.

"It's a testament to the fact that he believes in inspiring women, in empowering women," she said.

She added that her father instilled in her the belief that she has "the potential to accomplish exactly what her brothers could."

"To me, his actions speak louder than words spoken by other politicians," Ivanka said. Tiffany said her father has "just had faith in me.""He wants us to do the best, and he has the utmost faith that we can accomplish whatever set our minds to just as well as men, if not better," she said.

Melania Trump said that her husband treats men and women equally. "He treats everyone equally, so if you're a woman and they attack him, he will attack back no matter who they are," she said. "We are all human. He encourages everybody, you're a man or a woman."