Kammala wannan jumla: Dempster an kira shi wakili ne ga
Babban Taron Kasa na Jam'iyyar Democrat na 1956 a Chicago, kodayake ya yi ritaya daga siyasar birni bayan shan kaye a shekarar 1955. Daga baya ya sake komawa tsohon abokin gaba Cas Walker a cikin nasarar da ya yi na hana haɗin gwiwar gari, wanda masu jefa ƙuri'a na Knoxville da Knox County suka ƙi a cikin zaben raba gardama na 1959. Dempster ya mutu ne sakamakon bugun zuciya a ranar 18 ga Satumba, 1964. Fiye da masu makoki 1,000, daga cikinsu Sanatocin Amurka Al Gore, Sr., da Herbert S. Walters, sun taru a cikin Cocin Episcopal na St. James don jana'izar Dempster. An binne shi kusa da matarsa a makabartar Greenwood.