Donald Trump's upcoming appearance on Saturday Night Live this weekend is one of the show's most hotly anticipated - and already controversial - episodes in years, but, despite his say-anything persona, he's taking precautions not to go too far. He's backed away from sketches that might alienate voters, he told Fox News' Bill O'Reilly in an interview, Variety reports.

"I had to. There were a couple that were too risqué," he told O'Reilly in an interview for The O'Reilly Factor."Because you know, the poll just came down, I'm leading in Iowa, I want to stay leading in Iowa."

Donald Trump is in prime Donald Trump form in SNL teasers

Trump isn't the only one being careful: staff is on high alert for heckling and disruptions, according to The Hollywood Reporter.

Even with Trump's Secret Service and a tight audience vetting process, SNL is on guard for an outburst that might interrupt the broadcast. Not only are many Hispanic groups actively protesting Trump's appearance, but a Los Angeles-based activist named Luke Montgomery, who founded the anti-Trump campaign Deport Racism 2016, is offering $5,000 to anyone in the studio audience heard saying "deport racism" or "Trump is a racist" on air.

Will you be tuning in to see Trump on SNL?

Saturday Night Live airs Saturdays at 11:30/10:30c on NBC.

VIDEO: See why Saturday Night Live pulled some of its promos for Trump's appearance

Saturday Night Live