It has been a merciless US presidential campaign trail for candidates Donald Trump and Hillary Clinton, with brutal debates and numerous skeletons emerging from their respective closets.

Nonetheless, the elections have also brought plenty of laughs and light-hearted moments, sometimes at the expense of the two candidates.

Here are some entertaining stories on the side of the crucible of the elections, involving lookalikes and namesakes.

1. Donald Trump voting for Hillary Clinton?

Donald Trump is head of a cancer institute while Hillary Clinton is a music festival organiser.

Sounds like a parallel universe? Not at all, as Dr Donald Trump and Ms Hillary Clinton just happen to be namesakes of the two presidential candidates.

But Ms Clinton, who is in her 20s, also encounters some e-mail woes, although not as serious as those of the Democratic presidential candidate. The 69-year-old Clinton is currently under probe by the Federal Bureau of Investigation (FBI) for her private e-mail setup that might have put classfied information at risk.

Part of Ms Clinton's work involves liaising with performing artists and their agents.

"My e-mails sometimes get ignored and I have to send multiple follow-ups. People think I'm part of the campaign or they think it's spam," Ms Clinton said.

Her Facebook account has also been suspended on multiple occasions after the social network platform thought her name was a fake. She has since chosen to go by "Hill Clinton" on social media.

On the other hand, Dr Donald Trump is also a CEO - of Inova Schar Cancer Institute in Virginia, that is.

The two Donald Trumps have interacted on several occasions - the Republican presidential candidate had once asked the 71-year-old doctor for help in getting a close friend's son into a clinical trial. The other two encounters were at a fund-raiser and once more at Trump Tower.

Dr Donald Trump, however, intends to vote for Mrs Clinton due to his partisan beliefs.

"I have always felt kinship with Democratic political theories and approaches," he said.

Now that's something one would never have expected Donald Trump to say.

2. Hassled for "TRUMP" licence plate

Mr Brian Trump bought a licence plate reading "TRUMP" nine years ago because he thought it would be "cool" to have his name on his Volkswagen. He now receives nasty comments and looks when he drives around his Portland suburb in Oregon.

He said he is not related to the presidential candidate.

"I think if I were related, I would have a slightly different hair pattern," he joked, referring to the tycoon-turned-politician's signature hair.

"I've gotten a couple of thumbs-ups driving by, but it's generally the vulgar language, mean looks... that have unfortunately been a lot more common," he said with a shrug.

It does not end there - his wife also got herself a Trump vanity plate when they got married.

While he might have seen the lighter side at first, things got serious when three men started yelling at his wife while she was alone in her car.

Does he intend to remove the troublesome plates then?

It does not seems to be the case.

"I'm sticking with it, I'm not gonna let somebody bully me out of my plate," he said.

He will however, opt for a disclaimer vinyl sticker on the back of his car that reads: "It's my last name and I've got better hair."

3. 'Baby Trumps'

Little Hunter Tirpak from Pennsylvania had a gaze at his possible future self in 70 years when the two-year-old was brought up to the campaign rally stage by Mr Donald Trump.

During a rally on Oct 10 in Wilkes-Barre, Pennsylvania, Mr Trump spotted the toddler and spontaneously called him up on stage.

The boy was dressed like the business mogul too, in dress slacks, a shirt, tie and vest.

But it is his hair that has earned him his doppelganger fame.

"He definitely has crazy hair to begin with, so we worked with that, some hairspray, tease it," said his mother Jessica.

Mr Trump's hairdo has been one of his most recognisable features, albeit not one of his most flattering - based on the numerous memes and jokes made on the Internet about his golden bouffant.

Hunter smiled shyly as Mr Trump held him. When asked by the presidential nominee if he would rather stay on stage with him or return to his parents, the boy paused before saying "Trump", causing the arena to go wild with cheering.

Meanwhile, another baby known only as "Baby Max" has also captured hearts with his adorable Trump imitation from five years back, when Mr Trump was on reality TV show The Apprentice.

4. Which pop superstar dressed as Mrs Clinton for Halloween?

Pop star Katy Perry looks set to "Roar" Mrs Hillary Clinton all the way to victory at the polls, as the staunch supporter followed up on her raunchy voting video with a Halloween special.

The 32-year-old singer transformed herself into the Democrat presidential candidate while partner Orlando Bloom dressed as a troll-like Donald Trump complete with a "Make America Great Again" cap.

Ms Perry pulled all the stops as she enlisted her professional makeup artist team to apply prosthetics to her face in a four-hour long procedure. Her make-up and special effects artist said the team took three weeks to prepare the individual prosthetics customised for the superstar's face so she could look like 69-year-old Mrs Clinton.

She also entered the party, organised annually by Hollywood star Kate Hudson at her Los Angeles home, with one of her friends dressed as Mr Bill Clinton.

5. Man makes up to US$40,000 (S$55,370) a month impersonating Mr Trump

Mr John Di Domenico, 53, is one man who does not mind looking, sounding and acting like Mr Trump.

In fact, it is his job. And it is bringing him a tidy sum these days.

It all started in 2004 when the first season of Mr Trump's reality TV show The Apprentice aired.

Today, Mr Di Domenico gets at least six calls daily for requests for voice-overs, radio interviews, late night talk show appearances and meet-and-greets.

He earns between US$5,000 and US$15,000 to make corporate appearances.

He usually starts with a jibe about Mr Trump's alleged distaste for Mexicans.

"Anytime I do any kind of a group event, the first thing I say is, 'Are there any Mexicans here?'," the actor said. "There's usually a round of applause. From that I say, 'You see that? You see that? The Mexicans love me. They absolutely love me.'"

Mr Di Domenico may bring laughs, but he takes his impersonating very seriously. He meticulously pores through Mr Trump's latest speeches and videos to ensure he is always up to date. His ties are from the Donald J. Trump Collection and his three wigs, made from real human hair, cost US$4,000 each.

Mr Di Domenico's impersonating career emerged from some unlikely circumstances. He started imitating characters when he was five as a way to overcome a severe speech impediment.

So, will "Trump" vote Mr Trump?

"I'll put it this way, if I do vote for him, it'll probably help my career," he said.

SOURCES: CNN, KANSAS CITY STAR, PEOPLE, TELEGRAPH