Whether it's campaign rallies or TV appearances, Trump's family are nearly always on the wings lending their support - and tonight's Republican debate was no exception.

Trump's wife Melania, his son Eric and Eric's wife Lara were pictured lined up along the front row of the audience tonight to watch the business mogul go toe-to-toe with his Republican rivals.

And Melania took to the stage at the end as her husband was all smiles while he waved at the crowd.

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Eric, his wife Lara and Trump's other half Melania were pictured front and center during tonight's Republican debate in South Carolina

The trio were lending their support to Trump during the debate, though heavily-pregnant Ivanka was missing

Wife Melania joins husband Donald on stage as he waves to the crowd

Eric even tweeted a picture of his father on stage to his 200,000 followers, saying: 'Looking strong, as always proud of [my father].'

The Donald himself tweeted his excitement en route to the debate with a photo of his 'wonderful wife' but is yet to take to social media following Saturday's appearance.

Ahead of tonight's CNN showdown, Lara also posted a picture of herself and Eric embracing on social media along with the caption: 'Let's go win this GOP debate.'

And, according to a Drudge Report poll, Trump did indeed win the contest, capturing almost 43 per cent of the vote compared to Ted Cruz's 27 per cent in second place.

Trump with his wife Melania speaks to the media in the spin room after the CBS News Republican presidential debate

The Donald had tweeted his excitement en route to the debate with a photo of his 'wonderful wife'. According to a Drudge Report poll, Trump won the contest, capturing almost 43 per cent of the vote compared to Ted Cruz's 27 per cent in second place

Eric was quick to tweet the results, once again throwing his weight behind The Donald.

Trump's star turn of the debate came as he went after Jeb Bush over his brother George's decision to go to war with Iraq after 9/11.

'Obviously the war in Iraq is a big fat mistake,' Trump said.

Jabbing Jeb, Trump mocked his Republican rival's struggle last year to defend his brother's record while admitting that the war was based on incorrect information and was therefore a mistake.

Trump's most heated exchange of the evening came against Jeb Bush as he savaged him over brother George's decision to attack Iraq following 9/11

Republican presidential candidate, Sen. Marco Rubio, R-Fla., kisses his wife Jeanette Dousdebes

'It took him five days, he went back - it was a mistake, it wasn't a mistake - it took him five days before his people told him what to say and he ultimately said it was a mistake.'

Trump said, 'Obviously it was a mistake. George Bush made a mistake, we can make mistakes, but that one was a beauty. We should have never been in Iraq. We have destabilized the Middle East.'

The leading GOP candidate was visibly and vocally incensed as he responded to Dickerson's question about impeachment, 'You do whatever you want, you call it whatever you want.

'I want to tell you, they lied, they said there were weapons of mass destruction, there were none and they knew there were none. There were no weapons of mass destruction,' he declared.

'The World Trade Center came down during the reign of George Bush,' Trump shouted at another point in the exchange.