Shorten should resign if Trump wins

A coalition MP has questioned Bill Shorten's ability to build rapport with Donald Trump if the Republican wins the US presidential poll this week.

A coalition MP has called for Bill Shorten (pic) to resign if Donald Trump wins the US election. (AAP)

A coalition MP has called for Bill Shorten to resign as opposition leader if Donald Trump wins the US presidential election this week.

Mr Shorten has previously described Mr Trump as "barking mad" and questioned his suitability to be leader of the free world.

"Bill Shorten cannot work with a President Trump, he doesn't have the ability to build rapport with him," Liberal MP Luke Howarth told reporters in Canberra.