The event will air on CNN at 8 p.m. ET with Anderson Cooper set to moderate.
The GOP race for the White House took an ugly turn recently after Trump accused Cruz of being behind a super PAC ad featuring a scantily clad image of Trump’s wife Melania. Trump responded by attacking Cruz’s wife Heidi.
Trump’s campaign also suffered a blow Tuesday after Jupiter, Fla. police charged his campaign manager Corey Lewandowski with assault over an alleged incident with a reporter.
Wisconsin’s Republican primary is slated for April 5.