Nyorera kupfuurira kweiyi ndima - Munguva yesarudzo ya2002 yehurumende yeWyoming, Karpan akatsigira Paul Hickey nokuda kwekusarudzwa kweDemocratic. Akatsigira Hillary Clinton panguva ya2008 Wyoming Democratic presidential caucuses uye akashanda semumiriri waClinton pamusangano wenyika webato
. Munguva 2010 Wyoming gubernatorial sarudzo, Karpan akashanda sezvo co-chigaro Leslie Peterson kuti gubernatorial mushandirapamwe pamwe Joe Evans. Akatsigira zvakare Clinton panguva ye2016 Democratic presidential primaries. Mugore rimwe chetero, Karpan akashanda sachigaro wenyika yeRyan Greene's House of Representatives mushandirapamwe.