Donald Trump turns the air blue while blasting Kamala at a rally in Pennsylvania ... hours after video of Harris dropping F-bomb was shared

Donald Trump claimed 'every place Kamala Harris touched has turned to shit' during a rally, despite his wife's pleas for him not to swear.

The former president was trashing his opponent at a rally in Johnstown, Pennsylvania, on Friday night as he campaigns in the must-win state.

He was complaining about asylum-seekers entering the US and claimed 'this country is going to fail', before he dropped the inflammatory statement.

'These people are stupid people, that are running our country. They don't have any common sense, they believe in an ideology,' he began.

'If you look at Kamala, and you look at what she's done to... every place she's touched has turned to shit. Every single place she's touched.'

Donald Trump claimed 'every place Kamala Harris touched has turned to shit' during a rally, despite his wife's pleas for him not to swear

Trump turned to his left, away from the microphone, to address someone off-camera, and was heard saying 'have to say it'.

He turned back to the crowd and explained that the Reverend Franklin Graham, a staunch Trump ally, wrote him a letter asking him not to swear in his speeches.

'Your speeches would be even better if you didn't use foul language,' Trump said Graham wrote in his letter.

The Republican candidate added that Melania Trump also told him he shouldn't swear in his speeches, but he found it difficult.

'My wife also, she says please don't use foul language but it's hard - you know there's some words that can't be duplicated, they can't,' he said.

'But there's an example - well it's not really that bad a word but, how can you top that word for what I'm talking about? 

Trump was trashing his opponent at a rally in Johnstown, Pennsylvania, on Friday night as he campaigns in the must-win state

'Every place she touches wouldn't be nice? That would be a thud, it would land with a thud. 

'And Franklin's probably right, I'm not sure I agree with him, but he's a great guy actually... so I try and avoid it.'

Trump is down 1.4 per cent in an average of recent polls in Pennsylvania, a state that could decide the election result by itself. 

Prone to attacks on opponents, Trump has at other rallies used swear words, even getting the crowd to chant 'bullshit' when complaining about his 'hush money' trial.

Trump is not the only candidate to swear during public appearances during the campaign, as Harris used f**k in a speech in May.

Trump is not the only candidate to swear during public appearances during the campaign, as Harris used f**k in a speech in May

The vice president was speaking at a summit for Asians, Native Hawaiians, and Pacific Islanders, discussing her mixed black and Indian ancestry.

Harris told the audience that young people shouldn't let other define them by their ethnicity.

'We have to know that sometimes, people will open the door for you and leave it open, sometimes they won't,' she said.

'And then you need to kick that f**king door down,' she said, to huge cheers, before laughing and apologizing, 'Excuse my language'.

Harris also used the word in a TikTok video of herself teasing her niece Meena Harris about her cooking four years ago that resurfaced online this week.

Harris also used the word in a TikTok video of herself teasing her niece Meena Harris about her cooking four years ago that resurfaced online this week 

Meena asked her questions about the chicken they were cooking, until eventually Harris got exasperated with her.

'Tell me more, tell me more,' her niece begged after her aunt explained she was caramelizing onions, at which point Harris seemed to snap.

'You need to f**king learn how to cook instead of video taping me. I'm trying to teach you, but you're more interested in being a video person,' she said.

President Joe Biden, when he was Barack Obama's vide president, was overheard telling Obama that passing his signature health legislation was a 'big f**king deal'.

The Democrats sold T-shirts with 'health reform is a BFD' printed on them, along with the March 23, 2010, date Obamacare was signed into law.