Political junkies’ dreams of a contested Republican convention this year seemingly died when Texas Sen. Ted Cruz dropped out of the race after being defeated by Donald Trump in the Indiana primary. However, The Associated Press reports that GOP Sen. Jeff Flake on Tuesday raised the prospect that Republicans might still overturn the wills of their own voters by launching a challenge to Trump at this year’s RNC.

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“Where there’s no talk of a convention challenge or anything else, this might spur it,” Flake said in talking about Trump’s racist attacks on Judge Gonzalo Curiel.

Flake also dismissed any notion that Trump might really be planning to moderate himself now that GOP voters have rewarded his poor behavior by nominating him to be the most powerful man on the planet.

“Let’s face it: meet the old Trump, just like the new Trump,” Flake said. “We’ve got what we’ve got. That’s not somebody who can win the White House.”

Flake, for the record, is still saying that he can’t support Trump right now, although he’d be open to it if Trump shows the ability to drastically change everything about his personality and temperament at the age of 69.

But that’s not all: Embattled Illinois Republican Sen. Mark Kirk said on Tuesday that he would flat-out not vote for Trump because he did not trust him with the nation’s nuclear launch codes:

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Given my military experience, Donald Trump does not have the temperament to command our military or our nuclear arsenal. — Mark Kirk (@MarkKirk) June 7, 2016

Given this, it will be interesting to see how Trump responds: Will he back off… or will he octuple down on his plans to bash Curiel for his Mexican heritage?