US President Donald Trump on Saturday offered a preview of his 2020 campaign, announcing his new slogan will be "Keep America Great!" because 'Make America Great Again' is now outdated, CNN reported.

"Our new slogan when we start running in, can you believe it, two years from now, is going to be 'Keep America Great' exclamation point," Trump said from a Pennsylvania rally.

Trump made his comments while boosting Republican Rick Saccone ahead of a special election this Tuesday, boasting about the economy's continued performance through his tenure and slamming Democrats and the media.

Trump's slogan remark came over a week after he tapped Brad Parscale to steer his 2020 campaign, advancing a re-election effort he began virtually since taking office.