In an interview on Tuesday, ABC News' Jonathan Karl asked Trump whether he and his campaign were ready for the delegate-by-delegate fight that is dominating the primary.
“No, I was ready for a democratic race, meaning, you know, democracy,” Trump said. “And this is not democracy, this is not democracy at its finest.”
Trump emphasized that he is still ahead of rivals Ted Cruz and John Kasich (whom he called “two leftovers”) in the delegates race.
“I think we’re doing very well but despite that, it’s a rigged system it’s a very unfair system and it’s not democracy,” he added.
“When I win Louisiana and I don’t get as many delegates as Cruz, it’s ridiculous,” Trump said. “It’s not the way it’s supposed to work. When you get the votes you should win. It’s not like when you get the votes and then you give trips to people and you get delegates, not the way it’s supposed to be.”
Trump refuted Priebus’ tweet, telling Karl: “It’s totally mysterious. In fact the people that are running it don’t even know about it.”
Trump did not dismiss the idea, and quipped: “I beat them and it was rough.”
“I like Scott Walker, I always liked him but I beat him. Marco, I’ve always like him.”
He added, “After this is all over with, I will get along with everybody as a politician -- as a president perhaps -- I will unify the party.”
Trump has been campaigning across his home state for the last several days, focusing on Upstate New York, and heads up Pennsylvania on Wednesday.
ABC News' John Santucci contributed reporting.