Sen. Ted Cruz Rafael (Ted) Edward CruzSenate Republicans face tough decision on replacing Ginsburg Cruz: Trump should nominate a Supreme Court justice next week Renewed focus on Trump's Supreme Court list after Ginsburg's death MORE’s White House campaign manager took to Twitter on Friday to attack Republican front-runner Donald Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE, calling him “Sleazy Donald” and questioning his mental health.

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“Why no events in 4 days; none planned for 8,” Jeff Roe tweeted, mimicking Trump’s social media style. “Ever had psychological eval?"

MISSING #SleazyDonald: Why no events in 4 days; none planned for 8. Ever had psychological eval? What is hiding in medical records! Release! — Jeff Roe (@jeffroe) March 25, 2016

The tweet is the latest in an escalating feud between the two campaigns over attacks on the candidates’ wives and personal lives. Cruz has even blamed Trump for an article in the National Enquirer claiming he has had extramarital affairs.

Trump has not appeared in public since the feud began, with Cruz’s campaign accusing him of dodging questions about his new tactics of going after Cruz's, Heidi.