Donald Trump reveals his 2020 campaign slogan

US president, Donald Trump has revealed his slogan for his 2020 re-election campaign – saying he is “almost positive” he will run again.

Trump said he could not use the “Make America Great Again” tag line which helped propel him to a shock election win in 2016.

Instead, he says his new slogan will be "Keep America great!" - with an exclamation point.

The revelation came as Mr Trump was back on the campaign trail in Pennsylvania in the final days of a special election outside Pittsburgh seen as a pointer ahead of November’s mid-term elections.