WATCH: Sarah Palin Endorses Donald Trump, Pundit-sphere Goes Crazy

Reactions from cable news and political leaders to Palin's announcement have run the gambit from harsh criticism to predictions of Trump quickly winning the Republican nomination.

Sarah Palin Endorses Donald Trump in Ames, IA

REUTERS - Sarah Palin, the politician-turned-reality TV star offered a passionate endorsement on Tuesday to Republican presidential front-runner Donald Trump, the reality TV star-turned-politician, declaring that "the status quo has got to go."

Palin, a former Alaska governor who was Republican Senator John McCain's running mate in the 2008 election won by Democrats Barack Obama and Joe Biden, appeared with Trump at a rally in Ames, Iowa, two weeks before the state's Feb. 1 caucus, the country's first nominating process ahead of the Nov. 8 election.

Trump is in a close race in Iowa with fellow conservative Republican Ted Cruz.

Palin's folksy, plain-speaking style has won her a loyal following among some conservatives, but she remains a polarizing figure, even among Republicans.

Bloomberg's Mark Halperin predicts a quick Trump nomination RealClearPolitics.com

It is unclear whether she can attract additional support to Trump, whose own blunt rhetoric has helped lift him to the top of the crowded Republican field.

"He is from the private sector, not a politician," Palin said in an animated speech after joining the business mogul and former host of TV's "The Apprentice" onstage. "Can I get a hallelujah?"

George Will rips Palin endorsement of Trump Hugh Hewitt

A sneak peek at tomorrow's front page: I'M WITH STUPID - Palin backs Trump's 2016 bid https://t.co/UI3ru8EpC5 pic.twitter.com/SFb5yy1hej

She described Trump as an anti-establishment candidate who would "kick ISIS' ass," referring to the Islamic State militant group.

Something else Sarah Palin said today: "Squirmishes." As in, "jihadists are having squirmishes."

Just hours after Palin backed Trump, police in Alaska said they had arrested her eldest son, Track Palin, on suspicion of assaulting a woman and carrying a gun while intoxicated.

Palin said there was nothing wrong with Trump being a multibillionaire and that it did not make him an elitist, citing all the time he had spent with construction workers as a real-estate developer.

Charles Krauthammer: Palin endorsement a 'major blow' to Ted Cruz RealClearPolitics.com

As Trump stood alongside, Palin said: "The status quo has got to go," adding that the political establishment had been "wearing political correctness kind of like a suicide vest."

In a statement before the event, Trump said he was "greatly honored" by the endorsement. "She is a friend, and a high-quality person whom I have great respect for."

Trump has led national opinion polls among Republicans for months but is in a tight contest with Cruz, a U.S. senator from Texas, for the support of Iowa Republicans, who lean conservative and whose evangelical Christians comprise a major voting bloc.

Palin, who often discusses her Christian faith, is popular among that group and endorsed Cruz when he ran for the U.S. Senate in 2012.

Cruz responded to her switch of allegiance with magnanimity.

"Regardless of what she does in 2016," he tweeted, "I will always be a big fan."

She devoted a large portion of her speech to deflecting criticism from Cruz and others that Trump, who did not oppose legal abortion at least for a time, was not a true conservative.