The Miami contest comes ahead of the crucial March 15 Florida primary.
The two Democrats will face off in a debate, and Marco Rubio will participate in a one-man town hall.
Spokesman Dmitry Peskov said Moscow's position on the whistleblower has not changed.
On Thursday night, Donald Trump, Ted Cruz, Marco Rubio and John Kasich met in Detroit for the first Republican debate post-Super Tuesday. Here are the best moments from the 11th Republican presidential primary debate.
The candidates met Thursday in Detroit, which is 70 miles from the ongoing water crisis in Flint, Michigan.
The retired neurosurgeon failed to win any state that voted on Super Tuesday.
March marks the second month in the presidential election's primary season.
Finally, Rubio and Cruz turned their fire on Trump. But isn't it far too late?
At the debate on Thursday night, Trump said he is the only candidate who has hired people.
The forum is the only debate sanctioned by the Republican National Committee to be aired by a Spanish-language network.
The sooner Republicans admit Trump matches their anxieties and aspirations, the sooner they might learn to live with him.
The Republican candidate refused to comment on which side is to blame for lack of a peace deal.
Former Virginia Governor Jim Gilmore is the only GOP candidate who didn't earn a spot onstage.
Clinton and Sanders actually don't disagree very much on criminal justice
The two candidates will meet tonight at the University of Wisconsin-Milwaukee.
Unlike other debates, ABC News will not hold an undercard for low-polling candidates.
Absent Trump, the candidates got to set out their stalls. But is it too late?