Following on from Ben Quilty's portrait of Margaret Olley a little more information on the Archibald Prize.

This is an excellent summary of the finalists and prize winners of the Archibald as provided by the Art Gallery of NSW. You can view the finalists right back to 1921.
https://www.artgallery.nsw.gov.au/prizes/archibald/

And follow this link to read an interesting article from The Guardian about the Archibald Prize and what is means in 2018.
https://www.theguardian.com/artanddesign/australia-culture-blog/2018/may/04/archibald-prize-2018-what-the-award-means-in-2018-and-how-to-game-it