Active in municipal affairs of Strathcona, Walsh was a leader of a group of Strathcona residents that lobbied for the amalgamation of Strathcona with the city of
Edmonton, which was situated north of the
North Saskatchewan River. After the amalgamation happened in February 1912, friends urged Walsh to run for alderman in the
February 1912 municipal election and decided to stand. He ran campaign advertisements in the
Edmonton Bulletin, noting his involvement with the amalgamation negotiations of the two cities, stating that he "was one worked strenuously and conscientsciously for it until its final consummation". He chose to run without a platform, stating "I prefer not to make any pre-election promises or to attempt now to formulate a civic policy, as undoubtedly the best civic policy will be ultimately be evolved by the mayor and council acting together on suggestions probably to come from you, the electors." In the
February 1912 municipal election, Walsh finished eighth of eighteen candidates. Ten were to be elected - fiveto serve until December 1913 and five to serve just until Dec 1912. The terms of the amalgamation between Edmonton and
Strathcona, which had been effected days before the election (with Walsh's support), required that two of the five councillors elected to two-year terms had to come from the southside. Walsh was the second-most popular southside candidate so was elected to a two-year term, while fifth-place finisher
James East, a northsider, received only one year. The other southside candidates elected were
John G. Tipton and
Hugh Calder. supported a proposal to extend the street railway system (the streetcar system). During the 1912-1913 term, Edmonton city council considered a proposed contract of the Pelican Oil and Gas Company to supply their product to the city. Walsh offered the view that it was ultimately up to the citizens to decide on the contract. Walsh also sat briefly on the council's parks committee. He served out his term and offered for election again in 1913, however it is unclear if he would withdraw or be defeated for re-election as names of defeated candidates are no longer available. ==Death and funeral==