Pedzisa mutsara unotevera: Asati apinda chikoro chemutemo, Demissie akatanga basa rake rezvematongerwe enyika achishanda pakuronga kwaJohn Kerry mushandirapamwe wenyika wa2004. Vose vari vaviri vakashanda muIowa uye vakashumira somutungamiriri wavo womunda weGeorgia pane dzimwe nguva mumushandirapamwe. Munguva ya2008 United States sarudzo dzemutungamiri wenyika Demissie akatanga kushanda pakushambadzira kwaHillary Clinton musarudzo dzeDemocratic. Clinton aizokundwa naBarack Obama musarudzo dzokutanga. Mukati mesarudzo huru, akashanda somutungamiriri wokuvhota weOhio weObama's
mushandirapamwe, achibata chinzvimbo ichocho kubva muna Nyamavhuvhu 2008 kusvika pasarudzo dzaNovember.