A former Presidential speech writer's got some last minute advice for Donald Trump.

The Presidents expected to boast about the US economy and outline his legislative agenda in his first State of the Union address to Congress.

Mary-Kate Carey, who wrote speeches for George Bush Senior, said the aim is to appear unified with the rest of the house.

READ MORE: Donald Trump's first State of the Union today

She told Mike Hosking there are tricks Mr Trump can pull to seem more inclusive.

"Have people in the gallery who are not overly political. Speech writers try to write shameless applause lines to get as many people clapping as often as possible."

Carey said it's a lengthy process for speech writers, who start working on the address before Christmas.

"The first step is to send out an email to all the agencies and ask them what they would like the President to say, and tsunami of proposed language arrives and the poor speech writer has to start wading through it."

Trump's expected to boast about the economy and outline his legislative agenda

LISTEN TO MARY-KATE CAREY TALK WITH MIKE HOSKING ABOVE