The first person to knock on incoming Labor treasurer Ben Wyatt's door on Sunday morning was his cousin Ken.

Ken Wyatt became the nation's first Indigenous cabinet minister in January when Prime Minister Malcolm Turnbull promoted him to the aged care and Indigenous health portfolios.

"Uncle Ken" may wear differently political stripes but it mattered little on Saturday night when his cousin helped cement an emphatic political victory that will make him the nation's first Indigenous treasurer.

Labor's Ben Wyatt is poised to be the nation's first Indigenous treasurer. Megan Lewis

Ben Wyatt, a former lawyer whose father Cedric was a member of the stolen generation and campaigned for Indigenous rights, is proud he holds such a senior portfolio. He hoped Aboriginal people would find pride in the achievement.

"There has been a historic trend for Aboriginal MPs to have more socially orientated portfolios," Mr Wyatt said.