AMONG America’s political commentators, the most common observation during this year’s presidential primary season has been, “I don’t know what’s going on”.

In trying to explain the rise of Donald Trump as the Republican frontrunner, the so-called experts have been clueless. Every time they have declared Trump as having “imploded” electorally — whether it was from his policy to build a wall on the Mexican border or ban Muslim migration or attack the media as “lying, disgusting people” — The Donald’s support has continued to grow.

Occasionally this happens in public life. The pundits have no idea and a new narrative is required.

The big question is, how has Trump been able to defy the elites and push back so successfully against political correctness?

The first thing to understand is that this is not a new struggle, in Washington or Canberra.

For the past quarter of a century, under the 24-hour news cycle, whenever a non-politician, a genuine outsider, has stood for elected office, the media have jumped all over their novelty value, depicting them as some kind of freak show.

media_camera Republican Senator Marco Rubio. Picture: Getty/AFP

media_camera Former US president George Bush. Picture: Getty

media_camera Democratic presidential frontrunner Hillary Clinton. Picture: Getty/AFP

media_camera Former prime minister Tony Abbott and Peta Credlin. Picture: AAP

If their policies have been anywhere to the right of Che Guevara, the elites have ­labelled them “racist”, “sexist” and “fascist”. In Trump’s case, he has also been depicted as “vulgar”, someone too common, too plain-speaking, too rude to be seriously considered for high office.

Invariably, in the face of this media firestorm, maverick candidates have lost support, with elections being won by “respectable” types — insiders who will never challenge the status quo and upset the political club.

Trump is different because, at long last, Republican Party voters have twigged to the trickery and fraud of the campaign against outsiders.

In recent presidential contests, they have supported doyens of the political establishment, such as George Bush jr and Mitt Romney, and it’s got them nowhere.

By invading Iraq, Bush created more terrorism than he ever destroyed; the work of a third-generation dud from a privileged political dynasty.

In 2012 Romney ran as a dithering upper-class twerp, weakly conceding a second term to Barack Obama.

In Congress, “respectable” Republicans have been ineffective in combating the debilitating impact of identity politics, dividing the United States on the basis of race, gender and sexuality.

The Republican base has been baying for a red-meat candidate, a straight-talking, authentic, politically incorrect hard man — and Trump has given them what they want.

He has advocated bold solutions to longstanding problems, such as illegal immigration and deficit budgeting, backed by his personal story in building a lucrative business career.

Why shouldn’t they support a successful, down-to-earth candidate who talks their language and shares their values? The more the media attack Trump as “mad” and “erratic”, the more his supporters dig in, rejecting the politics of demonisation.

The US electorate has seen enough of political correctness to know it’s a con-job: an attempt to narrow the scope of public debate and lock out millions of voices of suburban commonsense.

Voters are starting to realise that terms like “mad” and “erratic” are code for saying: “We, the establishment, don’t like this guy because we can’t control him and he might upset the vested interests that currently control Washington.”

The elites have thrown everything at Trump and he’s still standing — a rallying point for the anti-PC cause.

As the Republican Senator Marco Rubio acknowledged in the dying days of his presidential bid, “I know that a lot of people find appeal in the things Donald says, because he says what people wish they could say.”

In truth, the greatest freak show in the American primaries has been Hillary Clinton, especially last month when she started barking like a dog at a rally in Nevada.

She once described her husband Bill as “a hard dog to keep on the porch” and now she’s imitating one.

When it comes to tolerating vulgarity, no one beats Mrs Clinton: hanging on to a husband who famously ­perfumed his Oval Office ­cigars with the scent of Monica Lewinsky.

Across the political class, the attacks on Trump’s manners reek of hypocrisy.

Behind the scenes, in the United States and Australia, journalists and politicians can be as rough as guts — no less so than The Donald.

As Niki Savva’s book on Tony Abbott and Peta Credlin demonstrated, much of the insider talk in Canberra is gossipy and salacious.

For many years on the Labor side, Kevin Rudd had the electorate conned into thinking that he was as homely and innocent as the Milky Bar Kid.

Then the video of his ranting meltdown at a Chinese interpreter went viral and the real Rudd was exposed.

During my time in parliament, I recall an excitable journalist who loved nothing better than cruelly denigrating colleagues and spreading rumours about extramarital affairs in the press gallery.

Since then, this malevolent influence has become a high-profile, multimedia personality, lecturing the nation on the need for civility — a breathtaking hypocrisy.

These are the two faces of modern politics: privately slagging off at one’s rivals, while using media platforms to call for higher standards.

At least Trump only has one face: an energetic, bombastic talking machine who speaks frankly about the things he believes in.

The Donald is by no means perfect but I much prefer his approach to the lying snakes of machine politics and media manipulation.

From an Australian perspective, there’s another sound reason to ignore the hysterical clamour about Trump.

His foreign policy is in our national interest.

“America can’t be the policeman of the world”, he says.

“We have to rebuild our own country.”

This is a return to the Republican tradition of opposing foreign adventurism — a belief that the US should spend more time minding its own business.

Trump has been highly critical of Bush and the neo-con invasion of Iraq, which resulted in the death of 4500 American servicemen and the rise of Islamic State — a truly vulgar outcome.

If he keeps his promise, a Trump presidency would mean no more fiascos like Vietnam and Iraq, sparing young Australian lives from the futile killing fields of US-led invasions.

Far from being a dangerous warmonger, Trump has a clear-headed appreciation of his country’s best interests — and ours.

dailytelegraph.com.au/news/opinion