Washington (CNN) Sen. Ted Cruz said Monday he could see inviting presidential campaign opponents Florida Sen. Marco Rubio and Ohio Gov. John Kasich into his cabinet in Washington -- and he also said he could see circumstances where he would not support front-runner Donald Trump as the nominee.

The conservative Texan has been repeatedly asked about whether he would support Trump if the mogul ends up winning the primary. Despite a the presence of the "Never Trump" movement within the Republican Party, candidates have been quick to say they will support the Republican nominee.

But speaking with reporters in Illinois on Monday, Cruz did say there was a scenario he wouldn't get behind Trump.

"I can give you one example where I would no longer support Donald Trump -- if, for example, he were to go out on Fifth Avenue and shoot somebody, I would not be willing to support Donald Trump," Cruz said.

The senator was making a reference to a statement Trump made earlier this year.

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