Donald Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE delivered a primary night address Tuesday from a teleprompter, despite lambasting Democratic front-runner Hillary Clinton Hillary Diane Rodham ClintonJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Momentum growing among Republicans for Supreme Court vote before Election Day Warning signs flash for Lindsey Graham in South Carolina MORE for reading from a script during a speech last week.

ADVERTISEMENT

The presumptive GOP presidential nominee typically speaks off the cuff during his victory speeches and campaign rallies and he regularly chides his rivals when they fall back on a script.

But this time, Trump appeared much more restrained as he delivered a measured and prepared speech that ticked off exactly what Republicans had been dying to hear.

He struck a conciliatory tone by thanking his supporters and promising to make Republicans "proud of your party and your movement," attacked the Clintons and hit many of the populist and Republican sweet spots typically touched upon during more conventional campaign speeches.

But the more buttoned-up Trump leaves him vulnerable to criticism from his competitors, whom he previously chided for speaking from a script.

Just last week, he levied that charge against Clinton during her foreign policy speech in which she bashed the real estate tycoon as being incapable of leading.

"Bad performance by Crooked Hillary Clinton! Reading poorly from the teleprompter! She doesn't even look presidential!" he tweeted last Thursday.

Trump has not always stuck by his rule — he's used a teleprompter during a handful of policy addresses where precision is important.

The decision to use scripted remarks cames hours after Trump was forced to respond to mounting criticism from fellow Republicans about his repeated criticism of a federal judge, whom Trump has claimed is biased against him because of his Mexican heritage.