Democratic presidential candidate Secretary Hillary Clinton speaks during a campaign event at Medgar Evans College in Brooklyn, New York, on 5 April 2016. Photo by Justin Lane/EPA

As Donald Trump and Hillary Clinton get closer to earning their party's respective nominations, Republicans concerned about the fate of their party and whether they can defeat the former secretary of state often come back to a central hope: That they'll see Clinton in handcuffs before the year is over.

Trump himself has also repeatedly implied the possibility that Clinton won't make it to November. "I find it hard to believe she's going to be allowed to run," Trump told Fox News earlier this year. "What she has done is so criminal."

But the Democratic frontrunner laughed off those views in an interview on NBC's Today Show that aired Friday morning, saying that Republicans who believe that she will be indicted over her email scandal "live in that world of fantasy and hope because they have a mess on their hands" in the Republican presidential primary.

Clinton explicitly dismissed the idea that the federal government will indict her, calling Republican hopes to the contrary both "false" and "ridiculous."

"That's not going to happen. There is not even the remotest chance that's going to happen," she said.

Clinton downplayed the significance of the FBI's investigation into her use of a private email server while serving as secretary of state, calling it merely "a security review."

"It is a security review and there are lots of those that are conducted in our government all the time and you don't hear about most of them. You'll hear about this one because it does involve me," Clinton said. "So that's why it gets so much attention."

Clinton said that the Republican promotion of this idea that she could soon be arrested was just another attack from the opposing party, of the kind she has endured over her 25-year career in politics.

"We're moving forward. The Republicans' fondest wishes will not be fulfilled," she said.