Marshall was confirmed in a Ministerial by-election romping to an easy win over Socialist Candidate Samuel Welsh later that year.

[3][4] He lost his portfolios as the Alexander Rutherford government fell in 1910 due to the Alberta and Great Waterways Railway scandal.

In the third by-election held in the riding Social Credit fielded Roderick Macleod who retained the district for his party.

Duncan Marshall having just been elected to the Legislature was appointed to the cabinet as Minister of Agriculture and Provincial Secretary by Premier Alexander Rutherford.

Marshall was unanimously confirmed as the Liberal candidate for the by-election and his portfolio endorsed by the membership at a nomination meeting attended by over 100 delegates on November 3, 1909.

Speakers at the meeting included federal MP Michael Clark and Senator Peter Talbot.

Marshall was re-elected with a landslide super majority taking almost 87% of the vote to keep his seat and ministerial post.

[3] On October 30, 1957 a stand-alone plebiscite was held province wide in all 50 of the then current provincial electoral districts in Alberta.

The plebiscite was intended to deal with the growing demand for reforming antiquated liquor control laws.

[13] Municipal districts lying inside electoral districts that voted against the Plebiscite such as Olds were designated Local Option Zones by the Alberta Liquor Control Board and considered effective dry zones, business owners that wanted a license had to petition for a binding municipal plebiscite in order to be granted a license.