Late summer 1925 was filled with federal election rumours, and Canadian Prime Minister William Lyon Mackenzie King eventually did call a general election for October 29 of that year. King had some housekeeping to do before the election, and one of his tasks was filling half of PEI’s seats in the Senate, which meant appointing two new senators to replace John Yeo and Patrick Murphy, who had both died during the previous year.
The August 31, 1925 Charlottetown Guardian editorial page was full of Senate news and opinion:

Then, breaking front page news from the September 3, 1925 Guardian:
Senators Who May Or May Not Be
Rumors were rife in the city yesterday regarding appointments to the vacant senatorships, to the effect that the choice had fallen upon Mr. J. J. Hughes, M. P., and Mr. Creelman McArthur, Summerside. No confirmation of this rumor was available last night but no doubt official announcement will be forthcoming very shortly. The Liberal decks are being cleared for action and no doubt all possible appointments will be made before the Liberal conventions are held as some possibilities for a senatorship may be willing to accept nomination as second choice, if they should fail in bagging the bigger plum. Mr. Nelson Rattenbury who has been a senatorial possibility till the last minute has been eliminated from the list by a consolation prize of a seat on the C. N. R. Board of Directors. What consolation will be handed out to the remaining aspirants has not yet been divulged, but anything is possible now that appointments will be handed out promiscuously in view of the pending election. In the meantime until more definite information is to hand, Messrs J. J. Hughes and Creelman McArthur will enjoy the felicity of being senators pro tem but subject to revision.
I can confirm that the rumours about Hughes and M(a)cArthur were true, and Creel resigned his seat in the PEI Legislature on September 5. Now to fire up the time machine and go back to place a few bets!

