Clinton ridicules Trump for campaigning from his jet

In a speech to her supporters in Delaware, Clinton also said that the Republican frontrunner should come out of his towers and spend time with Americans.

"I have said, 'Come out of those towers named for yourself and actually talk and listen to people.' You know, at some point, if you want to be president of the United States, you gotta get familiar with the United States. You gotta spend time with Americans of all sorts and backgrounds in every part of our country," Clinton said.

The former secretary of state is eyeing to become the first woman president of the United States.

A real estate billionaire from New York, Trump is the only presidential candidate to have his own jet and has been flying with it to campaign across the country.

Clinton said her fellow New Yorker is out of touch with everyday Americans.

"Don't just fly that big jet in and land it, go make a big speech and insult everybody you can think of and then go back, get on that big jet, and go back to you know your country club house in Florida or your penthouse in New York," she said.

"I somehow don't think that kind of puts you in touch with what's going on. I have spent now more than a year talking and listening to people, and I can tell you there's a lot of concern.

"People are having a hard time," Clinton said.

"I intend to do everything I can to be the nominee. I am clearly focused on that. But at the same time, I want to start drawing the starkest distinctions, between what I know America stands for... and what Donald Trump is standing for," she said.