Story highlights Sanders has vowed to remain in the race at least until June 7

Trump has also floated the idea of mounting an independent bid of his own

Washington (CNN) Republican front-runner Donald Trump has some free advice for Vermont Sen. Bernie Sanders: Make an independent bid for president.

"Bernie Sanders has been treated terribly by the Democrats -- both with delegates & otherwise. He should show them, and run as an independent," Trump tweeted Tuesday.

Bernie Sanders has been treated terribly by the Democrats—both with delegates & otherwise. He should show them, and run as an Independent! — Donald J. Trump (@realDonaldTrump) April 26, 2016

Sanders' wife, Jane Sanders, quickly dismissed the idea in an interview with CNN's Wolf Blitzer Tuesday afternoon.

"We've been very clear right from the beginning that we will not play the role of spoiler," she said. "The reason that he was active and he decided to run in the Democratic Party was just that: We cannot afford a Republican in the White House. We cannot afford a Republican appointing Supreme Court justices. So Bernie will not be running as an independent."

Trump, who has criticized the Republican nominating process as "rigged," has occasionally cited Sanders' deficit in the Democratic delegate fight as an example of how both parties' systems are corrupt.

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