Koort was elected to the Estonian Provincial Assembly, which governed the Autonomous Governorate of Estonia between 1917 and 1919; he served the full term. He did not sit in the newly formed Republic of Estonia's Asutav Kogu (Constituent Assembly) or its Riigikogu (Parliament). He died on 8 June 1931 in Leisi.Jaan Toomla, Valitud ja Valitsenud: Eesti parlamentaarsete ja muude esinduskogude ning valitsuste isikkoosseis aastail 1917–1999 (National Library of Estonia, 1999), pp. 23, 270.
