Pedzisa mutsara unotevera: Herman akashanda semutevedzeri wasachigaro wechikwata chemuchinjiko chemumiriri weDemocratic John Kerry musarudzo dzemutungamiri wenyika dza2004. Muna 2005, Howard Dean, achishanda saDemocratic National Committee Sachigaro, akasarudza Herman uye gweta James Roosevelt, Jr. vatungamiri veMitemo neMitemo yeKomiti. Chimiro ichi chakaisa Herman naRoosevelt pakati penharo pakati pemishandirapamwe yevaDemocratic primary candidates Barack Obama naHillary Clinton pamusoro pokuti vagare here nhume dzakabva kuMichigan neFlorida pa
Gungano reDemocratic National Convention ra2008. Herman akatsigira Hillary Clinton mu2016 Democratic Party Presidential primaries uye akashanda seMutevedzeri weParamende pa2016 Democratic National Convention.