 Humphrey akapinda munhangemutange kunonoka kuti apinde musarudzo dzeDemocratic. Aivimba nemwanakomana waanoda kuti awane nhume uye akatsigira vatungamiriri vane simba kuti awane mazita evamiririri. Vamwe vakwikwidzi, avo vakaedza kukunda kusarudzwa kupfurikidza netsigiro yavanhu, vakatsoropodza nzira yechinyakare yaHumphrey. Kuurayiwa kwaRobert Kennedy muna June 1968akasiya McCarthy somuvengi mukuru bedzi waHumphrey. Ikoko kwakachinja paDemocratic National Convention ya 1968 apo Seneta George McGovern weSouth Dakota akapinda munhangemutange somutsivi waKennedy. Humphrey akakunda kudomwa kwebato paCongress pavhoti yokutanga, pakati pemhirizhonga muChicago. Akasarudza seneta asingazivikanwi zvikuru Edmund Muskie weMaine somumiriri wake. 