'Might be a bit lonely': sole Greens MP claims victory

Elizabeth Watson-Brown, who retained the Brisbane seat of Ryan, is the Greens' only lower house MP. (Jono Searle/AAP PHOTOS)

The only Greens MP in the House of Representatives has promised to fight for progressive reform after the minor party's near wipeout in the lower house.

Elizabeth Watson-Brown was the only lower house Greens member to hold on at the federal election, recording a narrow victory in the Brisbane seat of Ryan.