All systems are go inside WA Labor after an unexpectedly strong result for Mark McGowan in Saturday's election. Labor's Premier-elect will have the happy problem of a caucus room almost full to bursting. But which Labor factions will come up trumps?

WA Labor is looking at potentially more than doubling its number of lower house seats, from 20 to 41. They've also had a solid showing in the upper house, with the ABC projecting they will increase from 11 to 14 seats.