Donald Trump on Democratic debate: ‘Sorry, there is no STAR on the stage tonight!’

Donald Trump speaks during a campaign stop in Waterloo, Iowa, on Oct. 7. (Photo: Charlie Neibergall/AP)

Republican presidential frontrunner Donald Trump live-tweeted the first Democratic presidential debate of the year — and he didn’t like what he saw.

The billionaire businessman took shots at the Democratic hopefuls as they responded to tough questions from debate moderator CNN anchor Anderson Cooper at the Wynn Las Vegas hotel and casino Tuesday night.

“Sorry, there is no STAR on the stage tonight!” he tweeted.

Trump, who has garnered an extraordinary amount of attention for the Republican primary, had previously predicted that the Democrats would bore the television audience.

“All are very scripted and rehearsed, two (at least) should not be on the stage,” he said on Twitter.

To drive that point home, throughout the night, Trump heckled the candidates via Twitter as each tackled Cooper’s questions.

On Hillary Clinton, former secretary of state

“The hardest thing Clinton has to do is defend her bad decision making including Iraq vote, e-mails etc.”

“The trade deal is a disaster, she was always for it! #DemDebate.”

On Bernie Sanders, U.S. senator from Vermont

“Sanders said only black lives matter — wow! Hillary did not answer question!”

On Martin O’Malley, former Maryland governor

“O'Malley, as former Mayor of Baltimore, has very little chance.”

On Lincoln Chafee, former Rhode Island governor

“Can anyone imagine Chafee as president? No way.”

On Jim Webb, former U.S. senator from Virginia

“@Iamnewhere: Webb is trying to be @realDonaldTrump and its not working.” He is not doing well!

Several of Trump’s supporters tweeted that his live coverage was the only reason they were watching the debate. But Trump was not the only Republican presidential candidate to weigh in on the field of Democratic contenders.

Democratic presidential candidates from left, former Virginia Sen. Jim Webb, Sen. Bernie Sanders of Vermont, Hillary Rodham Clinton, former Maryland Gov. Martin O'Malley and former Rhode Island Gov. Lincoln Chafee. (Photo: John Locher/AP)

Most of the other GOP presidential hopefuls directed their firepower at Clinton, who is leading in the polls.

Mike Huckabee, former Arkansas governor

“Wake up, @HillaryClinton. You know who else was “burning up the phone lines begging for help”… #Benghazi #DemDebate”

“.@BernieSander’s socialist math is as solid and sound as El Chapo’s prison security. #DemDebate”

“They believe climate change is a greater threat than Islamic extremism, that a sunburn is worse than a beheading. It’s nonsense! #DemDebate”

“I trust @BernieSanders with my tax dollars like I trust a North Korean chef with my labrador! #DemDebate”

Jeb Bush, former Florida governor

“Sec. Clinton might be the only person who thinks the Obama/Clinton foreign policy has been a success. ‘Smart power at its best’ Seriously?”

Rick Santorum, former U.S. senator from Pennsylvania

“Tonight reinforcing that @HillaryClinton is a disaster. Join our team & let’s take back America! #DemDebate”

George Pataki, former New York governor

“.@HillaryClinton the hardest thing about going to college shouldn’t be paying for your speeches #DemDebate”

“#Clinton playbook — Commit a crime. Call it a mistake and partisan blow it off and move on to breaking another law.”

Lindsey Graham, U.S. senator from South Carolina

“.@HillaryClinton clearly Wall Street didn’t listen to you. #DemDebate”

“.@HillaryClinton why didn’t you appear on TV to explain Benghazi? Where were you when those Americans were being murdered? #DemDebate”

Bobby Jindal, Louisiana governor

Jindal shared a popular clip from the Adam Sandler comedy “Billy Madison” to sum up how he felt about the candidates’ performances.