Rubuta ci gaba don wannan sakin layi - Walsh ya zama jagora a cikin siyasa na Jam'iyyar Democrat a Helena kuma ya halarci taron gundumar, gundumar da na jihohi da yawa a matsayin wakili. An ci shi a zaben 1906 don Majalisar Wakilai ta Amurka da kuma tseren 1910 don Majalisar Dattijan Amurka. Walsh ya kasance wakili ne a Babban Taron Kasa na Jam'iyyar Democrat na 1908, 1912, 1916, 1920
, 1924, 1928, da kuma 1932. Shi ne shugaban taron gunduma na kullum a shekara ta 1928 da 1932.