Voters warned to reconsider campaign material in booths

The first Aboriginal netballer to represent Australia, Marcia Ella-Duncan, has urged a 'yes' vote. (HANDOUT/GAMAY RANGERS)

Voters have been warned to reconsider wearing campaign T-shirts and badges when casting their ballot in the Indigenous voice referendum.

A long-standing rule bans campaigning inside polling places or within six metres of an entrance.