The first Western Australian state poll since Labor’s election win in March 2017 comes from YouGov Galaxy, courtesy of the Sunday Times, and it credits Labor with a 54-46 lead on two-party preferred, compared with 55.5-44.5 at the election. The primary votes are Labor 40% (compared with 42.2% at the election), Liberal 32% (31.2%), Nationals 6% (5.4%), Greens 11% (8.9%), One Nation 5% (4.9%). Presumably there were other questions featured in the poll, but that’s all we have for now. The sample for the poll was 800; I presume it was conducted on Wednesday and Thursday.
UPDATE: This turns out to have been part of the same poll from a week ago which found federal voting intention in Western Australia at 51-49 in favour of the Coalition. As such, the field work dates were August 2 and 3, which were the Thursday and Friday of last week.