The candidates are on the cusp of an election in which neither one has the luxury of time to spend with family.
The three leading candidates are all still struggling with the fallout from the deadly Pulse nightclub shooting in Orlando, Florida.
The two others who are still in the race are former Florida governor Jeb Bush and Vermont senator Bernie Sanders, whose supporters say they are in a much stronger position.
The candidates who have decided to stay in the election are former Maryland governor Martin O’Malley, former New York mayor Bill de Blasio, and former New Jersey governor Chris Christie.
A major theme in the presidential campaign has been the question of which candidate has the most experience, the most credibility and the most integrity.
The candidates also have a major role to play in the future of the country.
The Republican and Democratic candidates have spent the past two weeks sparring about the issue of gun control.
On Tuesday, Bush said he would sign an executive order to require background checks for all gun sales and transfers.
The next day, he backed off his position and said he is “not yet ready” to sign a measure to require a universal background check.
The following day, Bush reversed his position.
Clinton, meanwhile, was more positive.
She said she would sign a bill to rein in gun violence in the United States.
She has also said she is prepared to do everything in her power to defeat the Islamic State of Iraq and the Levant (ISIL) group.
Both candidates are also expected to be asked about their views on whether gun owners should be allowed to keep firearms on their property.
Trump has said that if someone is not allowed to own a firearm, it would be a “crime against humanity” and that the country should consider imposing a “national gun registry.”
Clinton, who is running for the Democratic nomination, has said she will support an amendment to the National Firearms Act that would ban “firearm trafficking, or transfer, or possession, or importation of firearms from other countries.”
The NRA has been pushing for a gun registry since the Sandy Hook massacre in 2012.
Trump, meanwhile said he will not be willing to sign an amendment that would limit the Second Amendment to the states, arguing that he has more experience than Clinton in dealing with guns and that he can handle the issue.
“I have no idea what’s going on with the Second Amendments,” Trump told Fox News on Tuesday.
“I have very little experience.
I have very, very little respect for the Second, and I think the Second amendment is something we should have a debate about.
I don’t know.
I haven’t seen anything.
I’ll probably have to go through the system and see what the hell is going on.
I won’t sign it.”
Clinton has been critical of Trump’s views on guns, saying on Sunday that he is not qualified to serve as president.
“He’s not fit to be commander-in-chief,” Clinton said.
“There’s a lot of questions about his temperament, his character, his judgement, and he’s not qualified.
So he’s out of the running.”
Bush is also looking at a range of issues during the next two weeks.
He said on Monday that he was “ready” to announce his candidacy but added that the time for “candidates to do the things they should do” is “past.”
“I think we have to move on,” he said.
Trump on Monday also said he has not decided whether he will run for president again.
“If I do, I’d have to say I’m doing it for my country,” Trump said.