Story highlights Hillary Clinton knocked Donald Trump's lavish lifestyle

She claims he's out of touch with most voters

Wilmington, Delaware (CNN) Hillary Clinton cast Donald Trump as out of touch with the United States while campaigning Monday in Delaware, arguing that the Republican front-runner flies into states, gives speeches and then returns to the lap of luxury without listening to voters' problems.

"Donald Trump says wages are too high in America and doesn't support raising the minimum wage and I have said, 'Come out of those towers named for yourself and actually talk and listen to people,'" Clinton said. "At some point, if you want to be president of the United States, you have to get familiar with the United States, you have to spend time with Americans of all sorts and backgrounds in every part of our country."

Clinton has started to turn her focus to the general election after a sizable win in the New York primary last week, not even mentioning Democratic rival Vermont Sen. Bernie Sanders once during her event.

Casting Trump as out of touch is new and opens up Clinton -- who regularly travels via private jet and has multiple homes -- to criticism for her own lifestyle. She and husband Bill Clinton own sizable homes in Chappaqua, New York, and Washington, as well as a Manhattan apartment. They also use an apartment in Little Rock that is owned by Bill Clinton's presidential library.

But she didn't shy away from her criticism on Monday, mocking Trump -- who has cast himself as a populist champion -- for his lavish lifestyle.

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