Dee ihe ga-aga n'ihu na paragraf a - Kemgbe afọ 1930, otu ihe dị mkpa nke ndị otu Democratic Party jikọtara ọnụ bụ ndị ọrụ nhazi. Ndị otu ndị ọrụ na-enye nnukwu ego, nhazi ndọrọ ndọrọ ọchịchị sitere na ala, na nkwado ntuli aka maka otu ahụ. Ndị otu Union na United States agbadatala site na oge kachasị elu na 1954 nke 35% ruo ala nke 11% na 2015. Mgbe Mgbakọ Democratic National Convention nke 1968 gasịrị
N'ọnwa Mee, Kọmitii McGovern-Fraser guzobere usoro primaries nke oge a. O wepụkwara ndị ọrụ nhazi site n'ọnọdụ ike ya n'ime Democratic Party ma meghee ya n'ụzọ ọchịchị onye kwuo uche ya nye ndị ntuli aka.