Green’s Dictionary of Slang

blouse v.1

[ety unknown; only uses are 1910s in Western Aus. and in context of local politics]

(Aus.) to defeat (in an election).

[Aus]Sun. Times (Perth) 19 May 8/6: The three coastal candidates supported by the ‘Worker’ being ‘bloused’ by overwhelming majorities.
[Aus]Sun. Times (Perth) 16 Nov. 8/5: But which of the other two Murchuson members could Heitmann have ‘bloused’ in the selection ballot?
[Aus]Sun. Times (Perth) 16 Feb. 8/2: The moral and spiritual reformer was ‘bloused‘ by an impressive majority.
[Aus]Sun. Times (Perth) 21 May. 7/5: In muddy pools there doesn’t lie / An ointment for his raw bones / And so he stays at home, while I / Get bloused by Dr. Sawbones!